gpio: altera: fix return value of altera_gpio_remove()
gpio: altera: fix return value of altera_gpio_remove()

The remove callback never succeeds, which seems odd.

Signed-off-by: Masahiro Yamada <378b411a8a63ecc7605ec4272234862d7781c6ae@socionext.com>
Reviewed-by: Alexandre Courbot <301cd6a3ea50a894b4b51e385c5eb12b9a4ffc0c@nvidia.com>
Acked-by: Tien Hock Loh <5b2e0e471cb9d8011caa20ef3c38f0149802947f@altera.com>
Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs