[PATCH] pinctrl: sprd: Add of_node_put() before return to prevent memory leak

[Nishka Dasgupta <nishkadg.linux@gmail.com>]

Each iteration of for_each_child_of_node puts the previous node, but in
the case of a return from the middle of the loop, there is no put, thus
causing a memory leak. Hence add an of_node_put before the return in
two places.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
---
 drivers/pinctrl/sprd/pinctrl-sprd.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.c b/drivers/pinctrl/sprd/pinctrl-sprd.c
index c31b58168772..5abb64da2c0d 100644
--- a/drivers/pinctrl/sprd/pinctrl-sprd.c
+++ b/drivers/pinctrl/sprd/pinctrl-sprd.c
@@ -940,8 +940,10 @@ static int sprd_pinctrl_parse_dt(struct sprd_pinctrl *sprd_pctl)
 
 	for_each_child_of_node(np, child) {
 		ret = sprd_pinctrl_parse_groups(child, sprd_pctl, grp);
-		if (ret)
+		if (ret) {
+			of_node_put(child);
 			return ret;
+		}
 
 		*temp++ = grp->name;
 		grp++;
@@ -950,8 +952,11 @@ static int sprd_pinctrl_parse_dt(struct sprd_pinctrl *sprd_pctl)
 			for_each_child_of_node(child, sub_child) {
 				ret = sprd_pinctrl_parse_groups(sub_child,
 								sprd_pctl, grp);
-				if (ret)
+				if (ret) {
+					of_node_put(sub_child);
+					of_node_put(child);
 					return ret;
+				}
 
 				*temp++ = grp->name;
 				grp++;
-- 
2.19.1