[PATCH] regulator: core: fix unbalanced of node refcount in regulator_dev_lookup()

[Yang Yingliang]

I got the the following report:

  OF: ERROR: memory leak, expected refcount 1 instead of 2,
  of_node_get()/of_node_put() unbalanced - destroy cset entry:
  attach overlay node /i2c/pmic@62/regulators/exten

In of_get_regulator(), the node is returned from of_parse_phandle()
with refcount incremented, after using it, of_node_put() need be called.

Fixes: 69511a452e6d ("regulator: map consumer regulator based on device tree")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
 drivers/regulator/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index bcccad8f7516..d63e6a8f569b 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1943,6 +1943,7 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 		node = of_get_regulator(dev, supply);
 		if (node) {
 			r = of_find_regulator_by_node(node);
+			of_node_put(node);
 			if (r)
 				return r;
 
-- 
2.25.1