OMAPDSS: use devm_ functions

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index 1703345..e75f837 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -751,7 +751,8 @@
 		r = -EINVAL;
 		goto err_ioremap;
 	}
-	dss.base = ioremap(dss_mem->start, resource_size(dss_mem));
+	dss.base = devm_ioremap(&pdev->dev, dss_mem->start,
+				resource_size(dss_mem));
 	if (!dss.base) {
 		DSSERR("can't ioremap DSS\n");
 		r = -ENOMEM;
@@ -760,7 +761,7 @@
 
 	r = dss_get_clocks();
 	if (r)
-		goto err_clocks;
+		goto err_ioremap;
 
 	pm_runtime_enable(&pdev->dev);
 
@@ -808,8 +809,6 @@
 err_runtime_get:
 	pm_runtime_disable(&pdev->dev);
 	dss_put_clocks();
-err_clocks:
-	iounmap(dss.base);
 err_ioremap:
 	return r;
 }
@@ -819,8 +818,6 @@
 	dpi_exit();
 	sdi_exit();
 
-	iounmap(dss.base);
-
 	pm_runtime_disable(&pdev->dev);
 
 	dss_put_clocks();