soc: qcom: ocmem: Make use of the helper function devm_platform_ioremap_resource_byname()

Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210908080216.1301-2-caihuoqing@baidu.com

drivers/soc/qcom/ocmem.c

@@ -300,7 +300,6 @@ static int ocmem_dev_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	unsigned long reg, region_size;
 	int i, j, ret, num_banks;
-	struct resource *res;
 	struct ocmem *ocmem;
 
 	if (!qcom_scm_is_available())
@@ -321,8 +320,7 @@ static int ocmem_dev_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");
-	ocmem->mmio = devm_ioremap_resource(&pdev->dev, res);
+	ocmem->mmio = devm_platform_ioremap_resource_byname(pdev, "ctrl");
 	if (IS_ERR(ocmem->mmio)) {
 		dev_err(&pdev->dev, "Failed to ioremap ocmem_ctrl resource\n");
 		return PTR_ERR(ocmem->mmio);