From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Date: Fri, 19 Jul 2019 01:22:06 +0000
> In case of error, the function of_get_mac_address() returns ERR_PTR()
> and never returns NULL. The NULL test in the return value check should
> be replaced with IS_ERR().
>
> Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver")
> Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
> Reviewed-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Applied.
