[PATCH net] net: ll_temac: Use devm_platform_ioremap_resource_byname()

[David Miller]

From: Wang Hai <wanghai38 at huawei.com>
Date: Thu, 30 Jul 2020 15:24:19 +0800

> platform_get_resource() may fail and return NULL, so we had better
> check its return value to avoid a NULL pointer dereference a bit later
> in the code. Fix it to use devm_platform_ioremap_resource_byname()
> instead of calling platform_get_resource_byname() and devm_ioremap().
> 
> Fixes: 8425c41d1ef7 ("net: ll_temac: Extend support to non-device-tree platforms")
> Reported-by: Hulk Robot <hulkci at huawei.com>
> Signed-off-by: Wang Hai <wanghai38 at huawei.com>

Applied to net-next.