Clean up. There are a few places where we want to probe the server, but
don't actually care about the fsinfo result. Change these to use
nfs_probe_server(), which handles the fattr allocation for us.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>