[PATCH v5 2/2] powerpc/powernv: Add NULL check after kzalloc in opal_add_one_export

[Qiujun Huang]

Here needs a NULL check, as kzalloc may fail returning NULL.

Issue was found by coccinelle.
Generated by: scripts/coccinelle/null/kmerr.cocci

Signed-off-by: Qiujun Huang <hqjagain at gmail.com>
Reviewed-by: Oliver O'Halloran <oohall at gmail.com>
---
 arch/powerpc/platforms/powernv/opal.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 71af1cbc6334..908d749bcef5 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -811,6 +811,9 @@ static int opal_add_one_export(struct kobject *parent, const char *export_name,
 		return rc;
 
 	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
+	if (!attr)
+		return -ENOMEM;
+
 	name = kstrdup(export_name, GFP_KERNEL);
 	if (!name) {
 		rc = -ENOMEM;
-- 
2.17.1