From 879828c6ade916d13a5187eb02546899c2cd496c Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Sat, 20 Dec 2014 22:47:07 +0800
Subject: [PATCH] gpio: grgpio: Avoid potential NULL pointer dereference

irqmap is optional property, so priv->domain can be NULL if !irqmap.
Thus add NULL test for priv->domain before calling irq_domain_remove()
to prevent NULL pointer dereference.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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