s3: libsmbclient: Fix hard-coded connection error return of ETIMEDOUT.

s3: libsmbclient: Fix hard-coded connection error return of ETIMEDOUT.

We shouldn't hard-code the connection error as ETIMEDOUT when
we have a perfectly good NT_STATUS to map from.

Found by the ChromeOS guys trying to connect an SMB2-only client
to an SMB1-only supporting server.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13419

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <Volker.Lendecke@SerNet.DE>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu May  3 02:42:20 CEST 2018 on sn-devel-144