cifs: fix regression in very old smb1 mounts

cifs: fix regression in very old smb1 mounts

BugLink: https://bugs.launchpad.net/bugs/1998843
commit 2f6f19c7aaad5005dc75298a413eb0243c5d312d upstream.

BZ: 215375

Fixes: 76a3c92ec9e0 ("cifs: remove support for NTLM and weaker authentication algorithms")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>