net: ethernet: mtk_eth_soc: fix return value check in mtk_wed_add_hw()

If syscon_regmap_lookup_by_phandle() fails, it never return NULL pointer,
change the check to IS_ERR().

Fixes: 804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yang Yingliang 2022-04-08 11:22:46 +08:00 committed by David S. Miller
parent 750d019d70
commit b559edfaf3

@ -813,7 +813,7 @@ void mtk_wed_add_hw(struct device_node *np, struct mtk_eth *eth,
return;
regs = syscon_regmap_lookup_by_phandle(np, NULL);
if (!regs)
if (IS_ERR(regs))
return;
rcu_assign_pointer(mtk_soc_wed_ops, &wed_ops);