radeon_cp: Remove unneeded tests for NULL before calling release_firmware()

release_firmware() does its own tests for NULL pointers so there's no
need to explicitly test before calling it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/gpu/drm/radeon/radeon_cp.c

@@ -1827,15 +1827,11 @@ void radeon_do_release(struct drm_device * dev)
 			r600_do_cleanup_cp(dev);
 		else
 			radeon_do_cleanup_cp(dev);
-		if (dev_priv->me_fw) {
 		release_firmware(dev_priv->me_fw);
 		dev_priv->me_fw = NULL;
-		}
-		if (dev_priv->pfp_fw) {
 		release_firmware(dev_priv->pfp_fw);
 		dev_priv->pfp_fw = NULL;
 	}
-	}
 }
 
 /* Just reset the CP ring.  Called as part of an X Server engine reset.