linux-3.15-rc5/arch/arm/mach-omap1/board-sx1.c:89: possible missing function call return value check ?

[dcb]

[linux-3.15-rc5/arch/arm/mach-omap1/board-sx1.c:89] -> [linux-3.15-rc5/arch/arm/mach-omap1/board-sx1
.c:95]: (performance) Variable 'err' is reassigned a value before the old one has been used.

Source code is

    err = i2c_transfer(adap, msg, 1);

    msg->addr = devaddr; /* I2C address */
    msg->flags = I2C_M_RD;
    msg->len = 1;
    msg->buf = data;
    err = i2c_transfer(adap, msg, 1);

Suggest sanity check value of 'err' after first assignment.