drivers/video/msm/mddi_client_nt35399.c: use devm_ functions

The various devm_ functions allocate memory that is released when a driver
detaches. This patch replaces the use of kzalloc by devm_kzalloc.

Additionally, this patch fixes a memory leak: some memory was allocated for
'panel' but not released when the subsequent call to setup_vsync fails.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

drivers/video/msm/mddi_client_nt35399.c

@@ -189,8 +189,9 @@ static int mddi_nt35399_probe(struct platform_device *pdev)
 
 	int ret;
 
-	struct panel_info *panel = kzalloc(sizeof(struct panel_info),
-					   GFP_KERNEL);
+	struct panel_info *panel = devm_kzalloc(&pdev->dev,
+						sizeof(struct panel_info),
+						GFP_KERNEL);
 
 	printk(KERN_DEBUG "%s: enter.\n", __func__);
 
@@ -233,7 +234,6 @@ static int mddi_nt35399_remove(struct platform_device *pdev)
 	struct panel_info *panel = platform_get_drvdata(pdev);
 
 	setup_vsync(panel, 0);
-	kfree(panel);
 	return 0;
 }