CCS/MSP432P401R: Interrupt flag occure twice on MSP432

#include "msp.h"
/* Standard Includes */
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <uart2.h>


uint8_t  txData,messageInProgress, charsReceived;
volatile bool bleState = true;
extern  uint8_t btConnected, deviceConn;

char expectedCommandResponse[6];

volatile bool buffReceive;


/*UART BLUETOOTH CONFIGURATION*/
void uart_init(void){
     /*CONFIGURE UART*/

     EUSCI_A2->CTLW0 |= EUSCI_A_CTLW0_SWRST;                       /*BEGIN INITIALIZATION PROCESS FOR BAUD RATE 115200*/
     EUSCI_A2->CTLW0 |= EUSCI_A_CTLW0_SSEL__SMCLK;                 /*CONFIGURE EUSCI CLOCK SMCLK*/
     /*BAUD RATE CALCULATION*/
     EUSCI_A2->BRW   =   78;
     EUSCI_A2->MCTLW =   ( 2 << EUSCI_A_MCTLW_BRF_OFS )  |
                         EUSCI_A_MCTLW_OS16;

     EUSCI_A2->CTLW0 &= ~(EUSCI_A_CTLW0_SWRST);                   /*INITIALIZE EUSCI STATE MACHINE*/
     //EUSCI_A2->IFG &= ~(EUSCI_A_IFG_RXIFG);
     EUSCI_A2->IE    |=  EUSCI_A_IE_RXIE;                         /*ENABLE THE UART RX INTERRUPT*/
     /*ENABLE NVIC IN EUSCI_A2 INTERRUPT*/
     __enable_interrupt();
     NVIC->ISER[0] = 1 << ((EUSCIA2_IRQn) & 31);

}

/*UART PORTS*/
void confg_uart_wire(void){
     P3->SEL0 |=   UARTMSP432_P3_3_UCA2TXD | UARTMSP432_P3_2_UCA2RXD;                 /*SET 2 UART PIN AS SECOND FUNCTION*/
     P3->SEL1 &= ~(UARTMSP432_P3_3_UCA2TXD | UARTMSP432_P3_2_UCA2RXD);                /*SET 2 UART PIN AS SECOND FUNCTION*/
}

/*CONFIGURE INPUT OUTPUT TO SAVE ENERGY*/
void confg_IO (void){
        P1->OUT  = 0x00;    P1->DIR  = 0xFF;
        P2->OUT  = 0x00;    P2->DIR  = 0xFF;
        P3->OUT  = 0x00;    P3->DIR  = 0xFF;
        P4->OUT  = 0x00;    P4->DIR  = 0xFF;
        P5->OUT  = 0x00;    P5->DIR  = 0xFF;
        P6->OUT  = 0x00;    P6->DIR  = 0xFF;
        P7->OUT  = 0x00;    P7->DIR  = 0xFF;
        P8->OUT  = 0x00;    P8->DIR  = 0xFF;
        P9->OUT  = 0x00;    P9->DIR  = 0xFF;
        P10->OUT = 0x00;    P10->DIR = 0xFF;
        PJ->OUT  = 0x00;    PJ->DIR  = 0xFF;
}


/*UART CLOCK SYSTEM*/
void uart_CSY(void){
     CS->KEY  = CS_KEY_VAL;                                        /*UNLOCK CS MODULE REGISTER ACESS*/
     CS->CTL0 = 0;                                                 /*RESET TUNING PARAMETERS*/
     CS->CTL0 = CS_CTL0_DCORSEL_3;                                 /*SET DCO TO 12MHz (NOMINAL, CENTER OF 8-16MHz RANGE)*/
     CS->CTL1 = CS_CTL1_SELA_2 |                                   /*SELECT ACLK = REFO*/
                CS_CTL1_SELS_3 |                                   /*SMCLK = DCO*/
                CS_CTL1_SELM_3;                                    /*MCLK = DCO*/
     CS->KEY  = 0;
}



void sendBlutoothByte(unsigned char byte){
     while (!(EUSCI_A2->IFG & EUSCI_A_IFG_TXIFG));                  /*EUSCI_A2 TX BUFFER READY?*/
     EUSCI_A2->TXBUF = byte;                                        /*TX -> RX CHARACTER*/
}

void sendBlutoothString(unsigned char* string){
    while(*string)
        sendBlutoothByte(*string++);                              /*ADVANCE THOUGH STRING TILL END*/
}

/*UART INTERRUPT SERVICE ROUTINE */
void EUSCIA2_IRQHandler(void){
    if (EUSCI_A2->IFG & EUSCI_A_IFG_RXIFG){                        /*DETECT IF RX INTERRUPT WAS ACTIVATED*/
        buffReceive = EUSCI_A2->RXBUF;
        printf("%d\n",buffReceive);
    }


}

#include "msp.h"
#include "main.h"
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <uart2.h>

uint8_t btConnected, deviceConn;


    void main(void){

    WatchDogHold();
    confg_IO();

    confg_uart_wire();
    uart_CSY();
    uart_init();
    headersApp();


    while(1){


}

void headersApp(void){
    sendBlutoothString("test\n");

}
void WatchDogHold(void){
WDTCTL = WDTPW | WDTHOLD;  /*STOP WATCHDOG TIMER*/
}