s390/topology: fix typo in early topology code

Use MACHINE_FLAG_TOPOLOGY instead of MACHINE_HAS_TOPOLOGY when
clearing the bit that indicates if the machine provides topology
information (and if it should be used). Currently works anyway.

Fixes: 68cc795d1933 ("s390/topology: make "topology=off" parameter work")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/kernel/early.c

@@ -377,7 +377,7 @@ static int __init topology_setup(char *str)
 
 	rc = kstrtobool(str, &enabled);
 	if (!rc && !enabled)
-		S390_lowcore.machine_flags &= ~MACHINE_HAS_TOPOLOGY;
+		S390_lowcore.machine_flags &= ~MACHINE_FLAG_TOPOLOGY;
 	return rc;
 }
 early_param("topology", topology_setup);