From fcefd1658648e6e07a69ada2246a12f6411cd8b8 Mon Sep 17 00:00:00 2001
From: chao an <anchao@xiaomi.com>
Date: Mon, 20 Feb 2023 14:44:27 +0800
Subject: [PATCH] net/devif: fix null pointer reference found out by coverity

Signed-off-by: chao an <anchao@xiaomi.com>
---
 net/devif/devif_filesend.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/devif/devif_filesend.c b/net/devif/devif_filesend.c
index 5fa2e124f2..a3245794c0 100644
--- a/net/devif/devif_filesend.c
+++ b/net/devif/devif_filesend.c
@@ -150,7 +150,11 @@ int devif_file_send(FAR struct net_driver_s *dev, FAR struct file *file,
 errout:
   if (ret < 0)
     {
-      netdev_iob_release(dev);
+      if (dev != NULL)
+        {
+          netdev_iob_release(dev);
+        }
+
       nerr("ERROR: devif_iob_send error: %d\n", ret);
     }