rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge

[ Upstream commit 65382585f067d4256ba087934f30f85c9b6984de ]

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.

Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220511120737.57374-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index f23f10887d93cc62ac3d56c66724862c21d0d19e..f4f950c231d6991518063478ae2ddf2bfef73cb0 100644 (file)
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1364,6 +1364,7 @@ static int qcom_smd_parse_edge(struct device *dev,
                }
 
                edge->ipc_regmap = syscon_node_to_regmap(syscon_np);
+               of_node_put(syscon_np);
                if (IS_ERR(edge->ipc_regmap)) {
                        ret = PTR_ERR(edge->ipc_regmap);
                        goto put_node;