net: socionext: use devm_platform_ioremap_resource() to simplify code

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.

Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: YueHaibing <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/socionext/sni_ave.c

···
 	struct ave_private *priv;
 	struct net_device *ndev;
 	struct device_node *np;
-	struct resource	*res;
 	const void *mac_addr;
 	void __iomem *base;
 	const char *name;
···
 	if (irq < 0)
 		return irq;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);