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net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register

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[ Upstream commit 02ded5a173619b11728b8bf75a3fd995a2c1ff28 ]

of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.

mv88e6xxx_mdio_register() pass the device node to of_mdiobus_register().
We don't need the device node after it.

Add missing of_node_put() to avoid refcount leak.

Fixes: a3c53be55c ("net: dsa: mv88e6xxx: Support multiple MDIO busses")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Miaoqian Lin 2022-05-26 18:52:08 +04:00 committed by Greg Kroah-Hartman
parent f7ba2cc57f
commit 42658e47f1
1 changed files with 1 additions and 0 deletions
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drivers/net/dsa/mv88e6xxx/chip.c
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@ -3148,6 +3148,7 @@ static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip,
*/
child = of_get_child_by_name(np, "mdio");
err = mv88e6xxx_mdio_register(chip, child, false);
of_node_put(child);
if (err)
return err;