mfd: Avoid calling platform_device_put() twice in ucb1400 probe error path

In the case of goto err2, what we want is to call
platform_device_del() instead of platform_device_unregister().
Otherwise, we call platform_device_put() twice.

Signed-off-by: Axel Lin <[e-mail]>
Signed-off-by: Samuel Ortiz <[e-mail]>

drivers/mfd/ucb1400_core.c

···
 err3:
 	platform_device_put(ucb->ucb1400_ts);
 err2:
-	platform_device_unregister(ucb->ucb1400_gpio);
+	platform_device_del(ucb->ucb1400_gpio);
 err1:
 	platform_device_put(ucb->ucb1400_gpio);
 err0: