[media] drivers/media/radio/radio-si4713.c: 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: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/radio/radio-si4713.c

@@ -268,7 +268,7 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev)
 		goto exit;
 	}
 
-	rsdev = kzalloc(sizeof *rsdev, GFP_KERNEL);
+	rsdev = devm_kzalloc(&pdev->dev, sizeof(*rsdev), GFP_KERNEL);
 	if (!rsdev) {
 		dev_err(&pdev->dev, "Failed to alloc video device.\n");
 		rval = -ENOMEM;
@@ -278,7 +278,7 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev)
 	rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev);
 	if (rval) {
 		dev_err(&pdev->dev, "Failed to register v4l2 device.\n");
-		goto free_rsdev;
+		goto exit;
 	}
 
 	adapter = i2c_get_adapter(pdata->i2c_bus);
@@ -322,8 +322,6 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev)
 	i2c_put_adapter(adapter);
 unregister_v4l2_dev:
 	v4l2_device_unregister(&rsdev->v4l2_dev);
-free_rsdev:
-	kfree(rsdev);
 exit:
 	return rval;
 }
@@ -342,7 +340,6 @@ static int __exit radio_si4713_pdriver_remove(struct platform_device *pdev)
 	video_unregister_device(rsdev->radio_dev);
 	i2c_put_adapter(client->adapter);
 	v4l2_device_unregister(&rsdev->v4l2_dev);
-	kfree(rsdev);
 
 	return 0;
 }