[S390] cio: Dont call ->release directly.

Just put the cdev's reference count to give up our reference.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/cio/device.c

@@ -751,8 +751,8 @@ static int io_subchannel_initialize_dev(struct subchannel *sch,
 	/* Do first half of device_register. */
 	device_initialize(&cdev->dev);
 	if (!get_device(&sch->dev)) {
-		if (cdev->dev.release)
-			cdev->dev.release(&cdev->dev);
+		/* Release reference from device_initialize(). */
+		put_device(&cdev->dev);
 		return -ENODEV;
 	}
 	return 0;