ath10k: Use devm_platform_get_and_ioremap_resource()

Use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210605110227.2429420-1-yangyingliang@huawei.com

drivers/net/wireless/ath/ath10k/ahb.c

@@ -442,14 +442,7 @@ static int ath10k_ahb_resource_init(struct ath10k *ar)
 
 	pdev = ar_ahb->pdev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		ath10k_err(ar, "failed to get memory resource\n");
-		ret = -ENXIO;
-		goto out;
-	}
-
-	ar_ahb->mem = devm_ioremap_resource(&pdev->dev, res);
+	ar_ahb->mem = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(ar_ahb->mem)) {
 		ath10k_err(ar, "mem ioremap error\n");
 		ret = PTR_ERR(ar_ahb->mem);