ethernet: renesas: ravb_main: add missing of_node_put after calling of_parse_phandle

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/ravb_main.c

@@ -1005,6 +1005,7 @@ static int ravb_phy_init(struct net_device *ndev)
 	}
 	phydev = of_phy_connect(ndev, pn, ravb_adjust_link, 0,
 				priv->phy_interface);
+	of_node_put(pn);
 	if (!phydev) {
 		netdev_err(ndev, "failed to connect PHY\n");
 		return -ENOENT;