cifs: fix check for dead tcon in smb_init

commit bfb59820ee46616a7bdb4af6b8f7e109646de6ec upstream

This was recently changed to check for need_reconnect, but should
actually be a check for a tidStatus of CifsExiting.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Cc: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc fs/cifs/cifssmb.c
Simple merge