[PATCH 4.4 155/312] of_mdio: fix node leak in of_phy_register_fixed_link error path

From: Greg Kroah-Hartman
Date: Fri May 08 2020 - 08:42:35 EST


From: Johan Hovold <johan@xxxxxxxxxx>

commit 48c1699d5335bc045b50989a06b1c526b17a25ff upstream.

Make sure to drop the of_node reference also on failure to parse the
speed property in of_phy_register_fixed_link().

Fixes: 3be2a49e5c08 ("of: provide a binding for fixed link PHYs")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/of/of_mdio.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -334,8 +334,11 @@ int of_phy_register_fixed_link(struct de
status.link = 1;
status.duplex = of_property_read_bool(fixed_link_node,
"full-duplex");
- if (of_property_read_u32(fixed_link_node, "speed", &status.speed))
+ if (of_property_read_u32(fixed_link_node, "speed",
+ &status.speed)) {
+ of_node_put(fixed_link_node);
return -EINVAL;
+ }
status.pause = of_property_read_bool(fixed_link_node, "pause");
status.asym_pause = of_property_read_bool(fixed_link_node,
"asym-pause");