net: ethernet: mediatek: add the missing of_node_put() after node is used done

This patch adds the missing of_node_put() after finishing the usage
of of_parse_phandle() or of_node_get() used by fixed_phy.
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -269,6 +269,8 @@ static int mtk_phy_connect(struct mtk_mac *mac)
 				    ADVERTISED_Autoneg;
 	phy_start_aneg(mac->phy_dev);
 
+	of_node_put(np);
+
 	return 0;
 }