vhost-vdpa: Call ida_simple_remove() when failed

In function vhost_vdpa_probe(), when code execution fails, we should
call ida_simple_remove() to free ida.
Signed-off-by: NBo Liu <liubo03@inspur.com>
Message-Id: <20220805091254.20026-1-liubo03@inspur.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

drivers/vhost/vdpa.c

@@ -1363,6 +1363,7 @@ static int vhost_vdpa_probe(struct vdpa_device *vdpa)
 
 err:
 	put_device(&v->dev);
+	ida_simple_remove(&vhost_vdpa_ida, v->minor);
 	return r;
 }