net: stmmac: dwmac-sun8i: add missing of_node_put() in sun8i_dwmac_register_mdio_mux()

The node pointer returned by of_get_child_by_name() with refcount incremented,
so add of_node_put() after using it.

Fixes: b1a2a9eb0a76 ("net: stmmac: dwmac-sun8i: Handle integrated/external MDIOs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220428095716.540452-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index f86cc83003f2dccfdb91f7a6c63875623e83b7f0..f834472599f75cceded3275d15edca72203959cf 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -907,6 +907,7 @@ static int sun8i_dwmac_register_mdio_mux(struct stmmac_priv *priv)
 
        ret = mdio_mux_init(priv->device, mdio_mux, mdio_mux_syscon_switch_fn,
                            &gmac->mux_handle, priv, priv->mii);
+       of_node_put(mdio_mux);
        return ret;
 }