regulator: pfuze100: Fix refcount leak in pfuze_parse_regulators_dt

stable inclusion
from stable-v5.10.121
commit 9f564e29a51210a49df3d925117777c157a17d6d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9f564e29a51210a49df3d925117777c157a17d6d

--------------------------------

[ Upstream commit afaa7b93 ]

of_node_get() returns a node with refcount incremented.
Calling of_node_put() to drop the reference when not needed anymore.

Fixes: 3784b6d6 ("regulator: pfuze100: add pfuze100 regulator driver")
Signed-off-by: NMiaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220511113506.45185-1-linmq006@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>

drivers/regulator/pfuze100-regulator.c

@@ -531,6 +531,7 @@ static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
 	parent = of_get_child_by_name(np, "regulators");
 	if (!parent) {
 		dev_err(dev, "regulators node not found\n");
+		of_node_put(np);
 		return -EINVAL;
 	}
 
@@ -560,6 +561,7 @@ static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
 	}
 
 	of_node_put(parent);
+	of_node_put(np);
 	if (ret < 0) {
 		dev_err(dev, "Error parsing regulator init data: %d\n",
 			ret);