lcs: Recognize return codes of ccw_device_set_online().

The creation of a new lcs device requires a call to the function
ccw_device_set_online() for the read and the write channel. Failure
of either call should terminate the lcs device creation immediately
with return code -ENODEV.
Signed-off-by: NKlaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: NUrsula Braun <ursula.braun@de.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/s390/net/lcs.c

@@ -2130,8 +2130,12 @@ lcs_new_device(struct ccwgroup_device *ccwgdev)
 	card->write.ccwdev = ccwgdev->cdev[1];
 
 	recover_state = card->state;
-	ccw_device_set_online(card->read.ccwdev);
-	ccw_device_set_online(card->write.ccwdev);
+	rc = ccw_device_set_online(card->read.ccwdev);
+	if (rc)
+		goto out_err;
+	rc = ccw_device_set_online(card->write.ccwdev);
+	if (rc)
+		goto out_werr;
 
 	LCS_DBF_TEXT(3, setup, "lcsnewdv");
 
@@ -2210,8 +2214,10 @@ lcs_new_device(struct ccwgroup_device *ccwgdev)
 	return 0;
 out:
 
-	ccw_device_set_offline(card->read.ccwdev);
 	ccw_device_set_offline(card->write.ccwdev);
+out_werr:
+	ccw_device_set_offline(card->read.ccwdev);
+out_err:
 	return -ENODEV;
 }