watchdog: twl4030: Remove redundant platform_set_drvdata()

Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Timo Kokkonen <timo.t.kokkonen@nokia.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/twl4030_wdt.c

@@ -90,10 +90,8 @@ static int twl4030_wdt_probe(struct platform_device *pdev)
 	twl4030_wdt_stop(wdt);
 
 	ret = watchdog_register_device(wdt);
-	if (ret) {
-		platform_set_drvdata(pdev, NULL);
+	if (ret)
 		return ret;
-	}
 
 	return 0;
 }
@@ -103,7 +101,6 @@ static int twl4030_wdt_remove(struct platform_device *pdev)
 	struct watchdog_device *wdt = platform_get_drvdata(pdev);
 
 	watchdog_unregister_device(wdt);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }