[media] media: au0828 fix au0828_v4l2_device_register() to not unlock and free

au0828_v4l2_device_register() unlocks au0828_dev->lock and frees au0828
dev in error legs before return. au0828_usb_probe() does the same when
au0828_v4l2_device_register() returns error.

Fix au0828_v4l2_device_register() to not to unlock and free in its error
legs.

Signed-off-by: Shuah Khan <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/au0828/au0828-video.c

···
 	if (retval) {
 		pr_err("%s() v4l2_device_register failed\n",
 		       __func__);
-		mutex_unlock(&dev->lock);
-		kfree(dev);
 		return retval;
 	}
 
···
 	if (retval) {
 		pr_err("%s() v4l2_ctrl_handler_init failed\n",
 		       __func__);
-		mutex_unlock(&dev->lock);
-		kfree(dev);
 		return retval;
 	}
 	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;