drm: fix mismerge in drm_crtc.c

Daniel merged two things in 72a3697097b8dc92f5b8362598f5730a9986eb83,
but he merged this code twice, Dan's static checker spotted it.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
1 file changed