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Subject[PATCH net] net: rtsn: fix mdio_node leak in rtsn_mdio_alloc()
Date
of_get_child_by_name() takes a reference. The rtsn_reset() and
rtsn_change_mode() failure paths jump to out_free_bus and leak
mdio_node.

Add out_put_node to drop it before falling through.

Fixes: b0d3969d2b4d ("net: ethernet: rtsn: Add support for Renesas Ethernet-TSN")
Signed-off-by: Shitalkumar Gandhi <shitalkumar.gandhi@cambiumnetworks.com>
---
drivers/net/ethernet/renesas/rtsn.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/renesas/rtsn.c b/drivers/net/ethernet/renesas/rtsn.c
index 03a2669f0518..c46d991cceb5 100644
--- a/drivers/net/ethernet/renesas/rtsn.c
+++ b/drivers/net/ethernet/renesas/rtsn.c
@@ -797,11 +797,11 @@ static int rtsn_mdio_alloc(struct rtsn_private *priv)
/* Enter config mode before registering the MDIO bus */
ret = rtsn_reset(priv);
if (ret)
- goto out_free_bus;
+ goto out_put_node;

ret = rtsn_change_mode(priv, OCR_OPC_CONFIG);
if (ret)
- goto out_free_bus;
+ goto out_put_node;

rtsn_modify(priv, MPIC, MPIC_PSMCS_MASK | MPIC_PSMHT_MASK,
MPIC_PSMCS_DEFAULT | MPIC_PSMHT_DEFAULT);
@@ -823,7 +823,8 @@ static int rtsn_mdio_alloc(struct rtsn_private *priv)
priv->mii = mii;

return 0;
-
+out_put_node:
+ of_node_put(mdio_node);
out_free_bus:
mdiobus_free(mii);
return ret;
--
2.25.1

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