gpiolib: Fix a WARN_ON that can never trigger

"if (!x) WARN_ON(x)" can never trigger.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Christophe JAILLET 2017-01-27 12:56:42 +01:00 • committed by Linus Walleij
commit 3988d663c0