ASoC: mt8173: 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>
Link: https://lore.kernel.org/r/20190727150738.54764-6-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mediatek/mt8173/mt8173-afe-pcm.c

@@ -1056,7 +1056,6 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 	int irq_id;
 	struct mtk_base_afe *afe;
 	struct mt8173_afe_private *afe_priv;
-	struct resource *res;
 
 	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(33));
 	if (ret)
@@ -1086,8 +1085,7 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	afe->base_addr = devm_ioremap_resource(&pdev->dev, res);
+	afe->base_addr = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(afe->base_addr))
 		return PTR_ERR(afe->base_addr);