rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge

[ Upstream commit 2da6bfb2b12cd7c53f7b7bb309e46c53fda97477 ]

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

Fixes: 6d771081793f ("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 a4db9f6100d2ff2e98272d0b64b616b15f6ebfa3..0b1e853d8c91a5ff8249b23fb09f8122f488cd32 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;