[PATCH] acpi:correctly check failed allocation

[Insu Yun]

Since kobject_create_and_add can be failed in memory pressure,
return value need to be checked and return ENOMEM.

Signed-off-by: Insu Yun <wuninsu@xxxxxxxxx>
---
 drivers/acpi/sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 40a4265..e712a7b 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -878,6 +878,8 @@ int __init acpi_sysfs_init(void)
 		return result;
 
 	hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
+  if (!hotplug_kobj)
+    return -ENOMEM;
 	result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
 	if (result)
 		return result;
-- 
1.9.1

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