memory: mtk-smi: Use devm_platform_ioremap_resource

No functional change. Simplify probing code.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Ikjoon Jang <ikjn@chromium.org>
Link: https://lore.kernel.org/r/20210914113703.31466-10-yong.wu@mediatek.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

drivers/memory/mtk-smi.c

@@ -328,7 +328,6 @@ static int mtk_smi_dts_clk_init(struct device *dev, struct mtk_smi *smi,
 static int mtk_smi_larb_probe(struct platform_device *pdev)
 {
 	struct mtk_smi_larb *larb;
-	struct resource *res;
 	struct device *dev = &pdev->dev;
 	int ret;
 
@@ -337,8 +336,7 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	larb->larb_gen = of_device_get_match_data(dev);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	larb->base = devm_ioremap_resource(dev, res);
+	larb->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(larb->base))
 		return PTR_ERR(larb->base);
 
@@ -460,7 +458,6 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_smi *common;
-	struct resource *res;
 	int ret, clk_required = MTK_SMI_COM_REQ_CLK_NR;
 
 	common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
@@ -486,8 +483,7 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
 	 * base.
 	 */
 	if (common->plat->type == MTK_SMI_GEN1) {
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		common->smi_ao_base = devm_ioremap_resource(dev, res);
+		common->smi_ao_base = devm_platform_ioremap_resource(pdev, 0);
 		if (IS_ERR(common->smi_ao_base))
 			return PTR_ERR(common->smi_ao_base);
 
@@ -499,8 +495,7 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
 		if (ret)
 			return ret;
 	} else {
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		common->base = devm_ioremap_resource(dev, res);
+		common->base = devm_platform_ioremap_resource(pdev, 0);
 		if (IS_ERR(common->base))
 			return PTR_ERR(common->base);
 	}