s4-pydsdb-py_samdb_ntds_objectGUID(): Avoid potential memory leak

in case py_ldb is not a valid LDB

1 files changed, 6 insertions, 7 deletions

diff --git a/source4/dsdb/pydsdb.c b/source4/dsdb/pydsdb.c
index e270d7458b2..41985ba648d 100644
--- a/source4/dsdb/pydsdb.c
+++ b/source4/dsdb/pydsdb.c
@@ -414,19 +414,18 @@ static PyObject *py_samdb_ntds_objectGUID(PyObject *self, PyObject *args)
 	TALLOC_CTX *mem_ctx;
 	const struct GUID *guid;
 
-	mem_ctx = talloc_new(NULL);
-	if (mem_ctx == NULL) {
-		PyErr_NoMemory();
-		return NULL;
-	}
-
 	if (!PyArg_ParseTuple(args, "O", &py_ldb)) {
-		talloc_free(mem_ctx);
 		return NULL;
 	}
 
 	PyErr_LDB_OR_RAISE(py_ldb, ldb);
 
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
 	guid = samdb_ntds_objectGUID(ldb);
 	if (guid == NULL) {
 		PyErr_SetString(PyExc_RuntimeError, "Failed to find NTDS GUID");