Minor nit: we already have a tcon pointer so we don't need to
dereference cifs_sb again.

Also initialize the vars in the declaration.
Reported-by: NPeter Staubach <staubach@redhat.com>
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>