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 <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

drivers/gpu/drm/radeon/radeon_cp.c

···
 			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;
-		}
+		release_firmware(dev_priv->me_fw);
+		dev_priv->me_fw = NULL;
+		release_firmware(dev_priv->pfp_fw);
+		dev_priv->pfp_fw = NULL;
 	}
 }