watchdog: bcm_kona_wdt: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: linux-watchdog@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/bcm_kona_wdt.c

@@ -143,24 +143,18 @@ static void bcm_kona_wdt_debug_init(struct platform_device *pdev)
 	wdt->debugfs = NULL;
 
 	dir = debugfs_create_dir(BCM_KONA_WDT_NAME, NULL);
-	if (IS_ERR_OR_NULL(dir))
-		return;
 
-	if (debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt,
-				&bcm_kona_fops))
+	debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt,
+			    &bcm_kona_fops);
 	wdt->debugfs = dir;
-	else
-		debugfs_remove_recursive(dir);
 }
 
 static void bcm_kona_wdt_debug_exit(struct platform_device *pdev)
 {
 	struct bcm_kona_wdt *wdt = platform_get_drvdata(pdev);
 
-	if (wdt && wdt->debugfs) {
+	if (wdt)
 		debugfs_remove_recursive(wdt->debugfs);
-		wdt->debugfs = NULL;
-	}
 }
 
 #else