vhost-vdpa: fix use after free in vhost_vdpa_probe()

The put_device() calls vhost_vdpa_release_dev() which calls
ida_simple_remove() and frees "v".  So this call to
ida_simple_remove() is a use after free and a double free.

Fixes: ebe6a35 ("vhost-vdpa: Call ida_simple_remove() when failed")
Signed-off-by: Dan Carpenter <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Acked-by: Jason Wang <[email protected]>

Author: Dan Carpenter

drivers/vhost/vdpa.c

@@ -1582,7 +1582,6 @@ static int vhost_vdpa_probe(struct vdpa_device *vdpa)
 
 err:
 	put_device(&v->dev);
-	ida_simple_remove(&vhost_vdpa_ida, v->minor);
 	return r;
 }