[PATCH 4.9 099/159] media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@xxxxxxxxx>

[ Upstream commit 1c78f19c3a0ea312a8178a6bfd8934eb93e9b10a ]

of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: df3305156f98 ("[media] v4l: xilinx: Add Xilinx Video IP core")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/media/platform/xilinx/xilinx-vipp.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c
index feb3b2f1d874..df21646ef9fa 100644
--- a/drivers/media/platform/xilinx/xilinx-vipp.c
+++ b/drivers/media/platform/xilinx/xilinx-vipp.c
@@ -462,7 +462,7 @@ static int xvip_graph_dma_init(struct xvip_composite_device *xdev)
 {
 	struct device_node *ports;
 	struct device_node *port;
-	int ret;
+	int ret = 0;
 
 	ports = of_get_child_by_name(xdev->dev->of_node, "ports");
 	if (ports == NULL) {
@@ -472,13 +472,14 @@ static int xvip_graph_dma_init(struct xvip_composite_device *xdev)
 
 	for_each_child_of_node(ports, port) {
 		ret = xvip_graph_dma_init_one(xdev, port);
-		if (ret < 0) {
+		if (ret) {
 			of_node_put(port);
-			return ret;
+			break;
 		}
 	}
 
-	return 0;
+	of_node_put(ports);
+	return ret;
 }
 
 static void xvip_graph_cleanup(struct xvip_composite_device *xdev)
-- 
2.35.1