From: Nishka Dasgupta <nishkadg.linux@gmail.com>
Date: Tue, 23 Jul 2019 10:43:07 +0000 (+0530)
Subject: net: dsa: mv88e6xxx: chip: Add of_node_put() before return
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=78e420408d12eddd0e72613fc717f7994736ea9a;p=openwrt%2Fstaging%2Fblogic.git

net: dsa: mv88e6xxx: chip: Add of_node_put() before return

Each iteration of for_each_available_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.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 6b17cd961d06..c97dea4599a8 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2721,6 +2721,7 @@ static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip,
 			err = mv88e6xxx_mdio_register(chip, child, true);
 			if (err) {
 				mv88e6xxx_mdios_unregister(chip);
+				of_node_put(child);
 				return err;
 			}
 		}