[PATCH]: mm: notifier_from_errno() cleanup

[Prarit Bhargava <prarit@redhat.com>]

While looking at some other notifier callbacks I noticed this code could
use a simple cleanup.

notifier_from_errno() no longer needs the if (ret)/else conditional.  That
same conditional is now done in notifier_from_errno().

Signed-off-by: Prarit Bhargava <prarit@redhat.com>

diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 5bffada..59a3cd4 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -243,12 +243,7 @@ static int __meminit page_cgroup_callback(struct notifier_block *self,
 		break;
 	}
 
-	if (ret)
-		ret = notifier_from_errno(ret);
-	else
-		ret = NOTIFY_OK;
-
-	return ret;
+	return notifier_from_errno(ret);
 }
 
 #endif
diff --git a/mm/slab.c b/mm/slab.c
index 2640374..0164aa4 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1387,7 +1387,7 @@ static int __meminit slab_memory_callback(struct notifier_block *self,
 		break;
 	}
 out:
-	return ret ? notifier_from_errno(ret) : NOTIFY_OK;
+	return notifier_from_errno(ret);
 }
 #endif /* CONFIG_NUMA && CONFIG_MEMORY_HOTPLUG */
 

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