V4L/DVB (4865): Fix: Slot 0 not NULL on disconnecting SN9C10x PC Camera

The patch fix bug 5748.
Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/et61x251/et61x251_core.c

@@ -1182,8 +1182,6 @@ static void et61x251_release_resources(struct et61x251_device* cam)
 	video_set_drvdata(cam->v4ldev, NULL);
 	video_unregister_device(cam->v4ldev);
 
-	usb_put_dev(cam->usbdev);
-
 	mutex_unlock(&et61x251_sysfs_lock);
 
 	kfree(cam->control_buffer);
@@ -1275,6 +1273,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
 
 	if (cam->state & DEV_DISCONNECTED) {
 		et61x251_release_resources(cam);
+		usb_put_dev(cam->usbdev);
 		mutex_unlock(&cam->dev_mutex);
 		kfree(cam);
 		return 0;

drivers/media/video/sn9c102/sn9c102_core.c

@@ -1462,8 +1462,6 @@ static void sn9c102_release_resources(struct sn9c102_device* cam)
 	video_set_drvdata(cam->v4ldev, NULL);
 	video_unregister_device(cam->v4ldev);
 
-	usb_put_dev(cam->usbdev);
-
 	mutex_unlock(&sn9c102_sysfs_lock);
 
 	kfree(cam->control_buffer);
@@ -1555,6 +1553,7 @@ static int sn9c102_release(struct inode* inode, struct file* filp)
 
 	if (cam->state & DEV_DISCONNECTED) {
 		sn9c102_release_resources(cam);
+		usb_put_dev(cam->usbdev);
 		mutex_unlock(&cam->dev_mutex);
 		kfree(cam);
 		return 0;