vhost-backend: stick to -errno error return convention

Almost all VhostOps methods in kernel_ops follow the convention of
returning negated errno on error.

Adjust the only one that doesn't.

Signed-off-by: Roman Kagan <rvkagan@yandex-team.ru>
Message-Id: <20211111153354.18807-7-rvkagan@yandex-team.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

diff --git a/hw/virtio/vhost-backend.c b/hw/virtio/vhost-backend.c
index 44f7dbb2436d266b9a8df6d6fb16cf286be93b1c..e409a865aeb3dcad522166a630457182ba764bda 100644 (file)
--- a/hw/virtio/vhost-backend.c
+++ b/hw/virtio/vhost-backend.c
@@ -47,7 +47,7 @@ static int vhost_kernel_cleanup(struct vhost_dev *dev)
 
     assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_KERNEL);
 
-    return close(fd);
+    return close(fd) < 0 ? -errno : 0;
 }
 
 static int vhost_kernel_memslots_limit(struct vhost_dev *dev)