[PATCH net-next] netdevsim: correctly check return value of debugfs_create_dir

[Prashant Bhole]

Return value is now checked with IS_ERROR_OR_NULL because
debugfs_create_dir doesn't return error value. It either returns
NULL or a valid pointer.

Signed-off-by: Prashant Bhole <bhole_prashant...@lab.ntt.co.jp>
---
 drivers/net/netdevsim/netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index eb8c679fca9f..88d8ee2c89da 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -469,7 +469,7 @@ static int __init nsim_module_init(void)
        int err;
 
        nsim_ddir = debugfs_create_dir(DRV_NAME, NULL);
-       if (IS_ERR(nsim_ddir))
+       if (IS_ERR_OR_NULL(nsim_ddir))
                return PTR_ERR(nsim_ddir);
 
        err = bus_register(&nsim_bus);
-- 
2.13.6