drm/zte: remove unneeded semicolon

Fix the following coccicheck warning:

drivers/gpu/drm/zte/zx_vga.c:158:2-3: Unneeded semicolon
drivers/gpu/drm/zte/zx_vga.c:171:2-3: Unneeded semicolon
drivers/gpu/drm/zte/zx_vga.c:179:2-3: Unneeded semicolon
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200504113230.40588-1-yanaijie@huawei.com

drivers/gpu/drm/zte/zx_vga.c

@@ -155,7 +155,7 @@ static int zx_vga_register(struct drm_device *drm, struct zx_vga *vga)
 	if (ret) {
 		DRM_DEV_ERROR(dev, "failed to init encoder: %d\n", ret);
 		return ret;
-	};
+	}
 
 	drm_encoder_helper_add(encoder, &zx_vga_encoder_helper_funcs);
 
@@ -168,7 +168,7 @@ static int zx_vga_register(struct drm_device *drm, struct zx_vga *vga)
 	if (ret) {
 		DRM_DEV_ERROR(dev, "failed to init connector: %d\n", ret);
 		goto clean_encoder;
-	};
+	}
 
 	drm_connector_helper_add(connector, &zx_vga_connector_helper_funcs);
 
@@ -176,7 +176,7 @@ static int zx_vga_register(struct drm_device *drm, struct zx_vga *vga)
 	if (ret) {
 		DRM_DEV_ERROR(dev, "failed to attach encoder: %d\n", ret);
 		goto clean_connector;
-	};
+	}
 
 	return 0;