soc: rockchip: Fix refcount leak in rockchip_grf_init

of_find_matching_node_and_match returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 4c58063d4258 ("soc: rockchip: add driver handling grf setup")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220516072013.19731-1-linmq006@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/drivers/soc/rockchip/grf.c b/drivers/soc/rockchip/grf.c
index 384461b70684411101f2a756cc172bce3ddaa674..15a3970e350903d4a514caec7d5c5ac84f6f67ba 100644 (file)
--- a/drivers/soc/rockchip/grf.c
+++ b/drivers/soc/rockchip/grf.c
@@ -165,12 +165,14 @@ static int __init rockchip_grf_init(void)
                return -ENODEV;
        if (!match || !match->data) {
                pr_err("%s: missing grf data\n", __func__);
+               of_node_put(np);
                return -EINVAL;
        }
 
        grf_info = match->data;
 
        grf = syscon_node_to_regmap(np);
+       of_node_put(np);
        if (IS_ERR(grf)) {
                pr_err("%s: could not get grf syscon\n", __func__);
                return PTR_ERR(grf);