[PATCH v1 02/12] powerpc/pseries: CMM: Report errors when registering notifiers fails

[David Hildenbrand]

If we don't set the rc, we will return "0", making it look like we
succeeded.

Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
Cc: Paul Mackerras <paulus at samba.org>
Cc: Michael Ellerman <mpe at ellerman.id.au>
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: Pavel Tatashin <pasha.tatashin at soleen.com>
Cc: Richard Fontana <rfontana at redhat.com>
Cc: Allison Randal <allison at lohutok.net>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: Arun KS <arunks at codeaurora.org>
Signed-off-by: David Hildenbrand <david at redhat.com>
---
 arch/powerpc/platforms/pseries/cmm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 572651a5c87b..fab049d3ea1e 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -683,8 +683,12 @@ static int cmm_init(void)
 	if ((rc = cmm_sysfs_register(&cmm_dev)))
 		goto out_reboot_notifier;
 
-	if (register_memory_notifier(&cmm_mem_nb) ||
-	    register_memory_isolate_notifier(&cmm_mem_isolate_nb))
+	rc = register_memory_notifier(&cmm_mem_nb);
+	if (rc)
+		goto out_unregister_notifier;
+
+	rc = register_memory_isolate_notifier(&cmm_mem_isolate_nb);
+	if (rc)
 		goto out_unregister_notifier;
 
 	if (cmm_disabled)
-- 
2.21.0