isdn: icn: NULL dereference printing error message

"card2" is NULL here so I have changed it to use "id2" instead of
"card2->interface.id".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c
index e74df7c..53d487f 100644 (file)
--- a/drivers/isdn/icn/icn.c
+++ b/drivers/isdn/icn/icn.c
@@ -1580,8 +1580,7 @@ icn_addcard(int port, char *id1, char *id2)
        }
        if (!(card2 = icn_initcard(port, id2))) {
                printk(KERN_INFO
-                      "icn: (%s) half ICN-4B, port 0x%x added\n",
-                      card2->interface.id, port);
+                      "icn: (%s) half ICN-4B, port 0x%x added\n", id2, port);
                return 0;
        }
        card->doubleS0 = 1;