drm: Don't initialize local ret variable when not needed

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/gpu/drm/drm_crtc.c
Simple merge

diff --cc drivers/gpu/drm/drm_crtc_helper.c
Simple merge

diff --cc drivers/gpu/drm/drm_edid_load.c
Simple merge

diff --cc drivers/gpu/drm/drm_fb_helper.c
Simple merge

diff --cc drivers/gpu/drm/drm_gem.c
Simple merge

diff --cc drivers/gpu/drm/drm_irq.c
Simple merge

diff --cc drivers/gpu/drm/drm_lock.c
Simple merge

diff --cc drivers/gpu/drm/drm_stub.c
Simple merge

diff --cc drivers/gpu/drm/drm_sysfs.c
Simple merge