[PATCH net] net: rtsn: fix mdio_node leak in rtsn_mdio_alloc()

[Shitalkumar Gandhi]

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@xxxxxxxxxxxxxxxxxxx>
---
 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