powerpc/numa: check error return from proc_create

proc_create can fail, we should check the return value and pass up the
failure.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 649666d5d1c2..51d707d85b2d 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1801,7 +1801,8 @@ static const struct file_operations topology_ops = {
 static int topology_update_init(void)
 {
         start_topology_update();
-        proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops);
+        if (!proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops))
+                return -ENOMEM;
 
         return 0;
 }