s390/lcs: Fix null-pointer access in msg

An attempt to configure a CTC device as LCS results in the
following error message:

  (null): Detecting a network adapter for LCS devices failed
          with rc=-5 (0xfffffffb)

"(null)" results from access to &card->dev->dev in lcs_new_device()
which is only initialized later in the function. Fix this by using
&ccwgdev->dev instead which is initialized before lcs_new_device()
is called.
Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/lcs.c

@@ -2150,7 +2150,7 @@ lcs_new_device(struct ccwgroup_device *ccwgdev)
 	rc = lcs_detect(card);
 	if (rc) {
 		LCS_DBF_TEXT(2, setup, "dtctfail");
-		dev_err(&card->dev->dev,
+		dev_err(&ccwgdev->dev,
 			"Detecting a network adapter for LCS devices"
 			" failed with rc=%d (0x%x)\n", rc, rc);
 		lcs_stopcard(card);