omap: mailbox: update omap1 probing

Based on omap2 code.
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>

arch/arm/mach-omap1/mailbox.c

@@ -146,12 +146,7 @@ EXPORT_SYMBOL(mbox_dsp_info);
 static int __devinit omap1_mbox_probe(struct platform_device *pdev)
 {
 	struct resource *res;
-
-	if (pdev->num_resources != 2) {
-		dev_err(&pdev->dev, "invalid number of resources: %d\n",
-			pdev->num_resources);
-		return -ENODEV;
-	}
+	int ret;
 
 	/* MBOX base */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -161,27 +156,32 @@ static int __devinit omap1_mbox_probe(struct platform_device *pdev)
 	}
 
 	mbox_base = ioremap(res->start, resource_size(res));
-	if (!mbox_base) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		return -ENODEV;
-	}
+	if (!mbox_base)
+		return -ENOMEM;
 
 	/* DSP IRQ */
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (unlikely(!res)) {
 		dev_err(&pdev->dev, "invalid irq resource\n");
-		iounmap(mbox_base);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err_out;
 	}
 	mbox_dsp_info.irq = res->start;
 
-	return omap_mbox_register(&pdev->dev, &mbox_dsp_info);
+	ret = omap_mbox_register(&pdev->dev, &mbox_dsp_info);
+	if (ret)
+		goto err_out;
+	return 0;
+
+err_out:
+	iounmap(mbox_base);
+	return ret;
 }
 
 static int __devexit omap1_mbox_remove(struct platform_device *pdev)
 {
 	omap_mbox_unregister(&mbox_dsp_info);
-
+	iounmap(mbox_base);
 	return 0;
 }