diff --git a/src/amd/common.c b/src/amd/common.c
index 24fe28d..f14c119 100644
--- a/src/amd/common.c
+++ b/src/amd/common.c
@@ -83,6 +83,7 @@ int amd_common_post_reset(struct vendor_reset_dev *dev)
 
   kzfree(priv);
   dev->vendor_private = NULL;
+  mutex_destroy(&priv->smu_lock);
 
   return 0;
 }