drm: Check in setcrtc if the primary plane supports the fb pixel format

[Dan Carpenter]

Hello Laurent Pinchart,

The patch eca93e28c256: "drm: Check in setcrtc if the primary plane
supports the fb pixel format" from Mar 9, 2015, leads to the
following static checker warning:

	drivers/gpu/drm/drm_plane_helper.c:360 create_primary_plane()
	info: ignoring unreachable code.

drivers/gpu/drm/drm_plane_helper.c
   347  static struct drm_plane *create_primary_plane(struct drm_device *dev)
   348  {
   349          struct drm_plane *primary;
   350          int ret;
   351  
   352          primary = kzalloc(sizeof(*primary), GFP_KERNEL);
   353          if (primary == NULL) {
   354                  DRM_DEBUG_KMS("Failed to allocate primary plane\n");
   355                  return NULL;
                        ^^^^^^^^^^^^
   356                  /*
   357                   * Remove the format_default field from drm_plane when dropping
   358                   * this helper.
   359                   */
   360                  primary->format_default = true;
   361          }

regards,
dan carpenter