[PATCH] leds: leds-ns2: Add of_node_put() before return

[Nishka Dasgupta <nishkadg.linux@xxxxxxxxx>]

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
four places.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@xxxxxxxxx>
---
 drivers/leds/leds-ns2.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c
index f92e2c07c1c6..6e47c21ef1c4 100644
--- a/drivers/leds/leds-ns2.c
+++ b/drivers/leds/leds-ns2.c
@@ -263,12 +263,16 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 		struct ns2_led_modval *modval;
 
 		ret = of_get_named_gpio(child, "cmd-gpio", 0);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(child);
 			return ret;
+		}
 		led->cmd = ret;
 		ret = of_get_named_gpio(child, "slow-gpio", 0);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(child);
 			return ret;
+		}
 		led->slow = ret;
 		ret = of_property_read_string(child, "label", &string);
 		led->name = (ret == 0) ? string : child->name;
@@ -281,6 +285,7 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 		if (ret < 0 || ret % 3) {
 			dev_err(dev,
 				"Missing or malformed modes-map property\n");
+			of_node_put(child);
 			return -EINVAL;
 		}
 
@@ -289,8 +294,10 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 				      num_modes,
 				      sizeof(struct ns2_led_modval),
 				      GFP_KERNEL);
-		if (!modval)
+		if (!modval) {
+			of_node_put(child);
 			return -ENOMEM;
+		}
 
 		for (i = 0; i < num_modes; i++) {
 			of_property_read_u32_index(child,
-- 
2.19.1