video: xilinxfb: replace devm_request_and_ioremap by devm_ioremap_resource

Use devm_ioremap_resource instead of devm_request_and_ioremap.

This was done using the semantic patch
scripts/coccinelle/api/devm_ioremap_resource.cocci

The initialization of drvdata->regs_phys was manually moved lower, to take
advantage of the NULL test on res performed by devm_ioremap_resource.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/xilinxfb.c

@@ -259,12 +259,12 @@ static int xilinxfb_assign(struct platform_device *pdev,
 		struct resource *res;
 
 		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		drvdata->regs_phys = res->start;
-		drvdata->regs = devm_request_and_ioremap(&pdev->dev, res);
-		if (!drvdata->regs) {
-			rc = -EADDRNOTAVAIL;
+		drvdata->regs = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(drvdata->regs)) {
+			rc = PTR_ERR(drvdata->regs);
 			goto err_region;
 		}
+		drvdata->regs_phys = res->start;
 	}
 
 	/* Allocate the framebuffer memory */