dmaengine: owl: Use devm_platform_ioremap_resource() in owl_dma_probe()

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/d36b6a6c-2e3d-8d68-6ddc-969a377ca3b2@web.deSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/owl-dma.c

@@ -1045,18 +1045,13 @@ static int owl_dma_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct owl_dma *od;
-	struct resource *res;
 	int ret, i, nr_channels, nr_requests;
 
 	od = devm_kzalloc(&pdev->dev, sizeof(*od), GFP_KERNEL);
 	if (!od)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -EINVAL;
-
-	od->base = devm_ioremap_resource(&pdev->dev, res);
+	od->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(od->base))
 		return PTR_ERR(od->base);