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

commit 1a15267b7be77e0792cf0c7b36ca65c8eb2df0d8 upstream.

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

Fixes: 634db83b8265 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 7c73d296b940deb5e39afe7e766cd0293ec98bb9..497ce6e6b16ff45b4b2defeabf39f80875b49d66 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -879,6 +879,7 @@ 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;
 }