We accidentally return IS_ERR(priv->base) which is 1 instead of
PTR_ERR(priv->base) which is the error code.
Fixes: 
6c821bd9edc9 ('net: Add MOXA ART SoCs ethernet driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        ndev->base_addr = res->start;
        priv->base = devm_ioremap_resource(p_dev, res);
-       ret = IS_ERR(priv->base);
-       if (ret) {
+       if (IS_ERR(priv->base)) {
                dev_err(p_dev, "devm_ioremap_resource failed\n");
+               ret = PTR_ERR(priv->base);
                goto init_fail;
        }