On some bnx2x devices, iSCSI is determined to be unsupported only after
firmware is downloaded.  We need to check max_iscsi_conn again after
NETDEV_UP and block iSCSI init operations.  Without this fix, iscsiadm
can hang as the firmware will not respond to the iSCSI init message.
Signed-off-by: NEddie Wai <eddie.wai@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>