vhost: fix error handling for memory region alloc

callers of vhost_kvzalloc() expect the same behaviour on
allocation error as from kmalloc/vmalloc i.e. NULL return
value. So just return vzmalloc() returned value instead of
returning ERR_PTR(-ENOMEM)

Fixes: 4de7255f7d2be5 ("vhost: extend memory regions allocation to vmalloc")

Spotted-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 95bdb90fd7f0..eec2f11809ff 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -683,11 +683,8 @@ static void *vhost_kvzalloc(unsigned long size)
 {
         void *n = kzalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
 
-        if (!n) {
+        if (!n)
                 n = vzalloc(size);
-                if (!n)
-                        return ERR_PTR(-ENOMEM);
-        }
         return n;
 }