crypto: rockchip - 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 <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/rockchip/rk3288_crypto.c

@@ -311,7 +311,6 @@ MODULE_DEVICE_TABLE(of, crypto_of_id_table);
 
 static int rk_crypto_probe(struct platform_device *pdev)
 {
-	struct resource *res;
 	struct device *dev = &pdev->dev;
 	struct rk_crypto_info *crypto_info;
 	int err = 0;
@@ -339,8 +338,7 @@ static int rk_crypto_probe(struct platform_device *pdev)
 
 	spin_lock_init(&crypto_info->lock);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	crypto_info->reg = devm_ioremap_resource(&pdev->dev, res);
+	crypto_info->reg = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(crypto_info->reg)) {
 		err = PTR_ERR(crypto_info->reg);
 		goto err_crypto;