pmic_i2c: Return error in case of invalid pmic_i2c_tx_num

Return error in case of invalid pmic_i2c_tx_num.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Stefano Babic <sbabic@denx.de>
1 file changed