media: ivsc: csi: Clean up notifier set-up

Use v4l2_async_nf_add_fwnode_remote() to add an async fwnode remote
sub-device sub-device to the notifier. This avoids dealing with remote
endpoints.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Wentong Wu <wentong.wu@intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/pci/intel/ivsc/mei_csi.c

@@ -645,7 +645,6 @@ static int mei_csi_parse_firmware(struct mei_csi *csi)
 	};
 	struct device *dev = &csi->cldev->dev;
 	struct v4l2_async_connection *asd;
-	struct fwnode_handle *fwnode;
 	struct fwnode_handle *ep;
 	int ret;
 
@@ -664,15 +663,12 @@ static int mei_csi_parse_firmware(struct mei_csi *csi)
 
 	csi->nr_of_lanes = v4l2_ep.bus.mipi_csi2.num_data_lanes;
 
-	fwnode = fwnode_graph_get_remote_endpoint(ep);
-	fwnode_handle_put(ep);
-
 	v4l2_async_subdev_nf_init(&csi->notifier, &csi->subdev);
 	csi->notifier.ops = &mei_csi_notify_ops;
 
-	asd = v4l2_async_nf_add_fwnode(&csi->notifier, fwnode,
-				       struct v4l2_async_connection);
-	fwnode_handle_put(fwnode);
+	asd = v4l2_async_nf_add_fwnode_remote(&csi->notifier, ep,
+					      struct v4l2_async_connection);
+	fwnode_handle_put(ep);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
 		goto out_nf_cleanup;