OMAPDSS: HDMI: Convert to devm_request_and_ioremap

Using devm_request_and_ioremap provides better memory handling and
improves readability.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 72ab260..1d04bc0 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -1064,7 +1064,7 @@
 	}
 
 	/* Base address taken from platform */
-	hdmi.ip_data.base_wp = ioremap(res->start, resource_size(res));
+	hdmi.ip_data.base_wp = devm_request_and_ioremap(&pdev->dev, res);
 	if (!hdmi.ip_data.base_wp) {
 		DSSERR("can't ioremap WP\n");
 		return -ENOMEM;
@@ -1072,7 +1072,7 @@
 
 	r = hdmi_get_clocks(pdev);
 	if (r) {
-		iounmap(hdmi.ip_data.base_wp);
+		DSSERR("can't get clocks\n");
 		return r;
 	}
 
@@ -1117,8 +1117,6 @@
 
 	hdmi_put_clocks();
 
-	iounmap(hdmi.ip_data.base_wp);
-
 	return 0;
 }