watchdog: move the dereference below the NULL test

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
index 6aa46a90ff02..3796434991fa 100644
--- a/drivers/watchdog/watchdog_core.c
+++ b/drivers/watchdog/watchdog_core.c
@@ -128,11 +128,12 @@ EXPORT_SYMBOL_GPL(watchdog_register_device);
 void watchdog_unregister_device(struct watchdog_device *wdd)
 {
         int ret;
-        int devno = wdd->cdev.dev;
+        int devno;
 
         if (wdd == NULL)
                 return;
 
+        devno = wdd->cdev.dev;
         ret = watchdog_dev_unregister(wdd);
         if (ret)
                 pr_err("error unregistering /dev/watchdog (err=%d)\n", ret);