Fail path of ep93xx_keypad_acquire_gpio() tries to release
GPIO lines not acquired successfully before. Fix this.
Signed-off-by: NRafal Prylowski <prylowski@metasoft.pl>
Acked-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NRyan Mallon <rmallon@gmail.com>