arm: ep93xx: Don't try to release not acquired GPIO lines
Fail path of ep93xx_keypad_acquire_gpio() tries to release GPIO lines not acquired successfully before. Fix this. Signed-off-by: Rafal Prylowski <prylowski@metasoft.pl> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Ryan Mallon <rmallon@gmail.com>
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