diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
index 76a8bc5f6265..97b67df8fbfe 100644
--- a/kernel/events/callchain.c
+++ b/kernel/events/callchain.c
@@ -116,10 +116,11 @@ int get_callchain_buffers(void)
 
 	err = alloc_callchain_buffers();
 exit:
-	mutex_unlock(&callchain_mutex);
 	if (err)
 		atomic_dec(&nr_callchain_events);
 
+	mutex_unlock(&callchain_mutex);
+
 	return err;
 }