drm: Fix further issues in drivers/char/drm/via_irq.c
drm: Fix further issues in drivers/char/drm/via_irq.c

Fix de-reference of 'dev_priv' before NULL check.

Signed-off-by: Jayachandran C. <96cf2eaefe6ef0b41d6e16a8e12c96d2e6289942@gmail.com>
Cc: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@linux.ie>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@osdl.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs