diff --git a/sound/hda/core/ext/controller.c b/sound/hda/core/ext/controller.c
index b1f1eff1d181..6d0af7e6f63c 100644
--- a/sound/hda/core/ext/controller.c
+++ b/sound/hda/core/ext/controller.c
@@ -90,8 +90,10 @@ int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_bus *bus)
 
 	for (idx = 0; idx < link_count; idx++) {
 		hlink = kzalloc_obj(*hlink);
-		if (!hlink)
+		if (!hlink) {
+			snd_hdac_ext_link_free_all(bus);
 			return -ENOMEM;
+		}
 		hlink->index = idx;
 		hlink->bus = bus;
 		hlink->ml_addr = bus->mlcap + AZX_ML_BASE +