diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index ae1348d..cdbeb59 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -2421,6 +2421,7 @@
             if (sys2memblk) {
                 error_propagate(errp, local_err);
             } else {
+                error_free(local_err);
                 result->response =
                     GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED;
             }