diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index 5b8aa2fae48b..aa907ed466ea 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -49,8 +49,9 @@ static int get_prioidx(u32 *prio)
 		return -ENOSPC;
 	}
 	set_bit(prioidx, prioidx_map);
+	if (atomic_read(&max_prioidx) < prioidx)
+		atomic_set(&max_prioidx, prioidx);
 	spin_unlock_irqrestore(&prioidx_map_lock, flags);
-	atomic_set(&max_prioidx, prioidx);
 	*prio = prioidx;
 	return 0;
 }