drm/sun4i: Remove unneeded semicolon in sun4i_layer.c

Fixes coccicheck warning:

drivers/gpu/drm/sun4i/sun4i_layer.c:253:3-4: Unneeded semicolon
drivers/gpu/drm/sun4i/sun4i_layer.c:257:2-3: Unneeded semicolon
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/1576317091-24968-3-git-send-email-zhengbin13@huawei.com

drivers/gpu/drm/sun4i/sun4i_layer.c

@@ -250,11 +250,11 @@ struct drm_plane **sun4i_layers_init(struct drm_device *drm,
 			dev_err(drm->dev, "Couldn't initialize %s plane\n",
 				i ? "overlay" : "primary");
 			return ERR_CAST(layer);
-		};
+		}
 
 		layer->id = i;
 		planes[i] = &layer->plane;
-	};
+	}
 
 	return planes;
 }