NFSv4: Ensure we respect soft mount timeouts during trunking discovery

Tested-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

fs/nfs/nfs4state.c

@@ -2075,8 +2075,10 @@ again:
 	switch (status) {
 	case 0:
 		break;
-	case -NFS4ERR_DELAY:
 	case -ETIMEDOUT:
+		if (clnt->cl_softrtry)
+			break;
+	case -NFS4ERR_DELAY:
 	case -EAGAIN:
 		ssleep(1);
 	case -NFS4ERR_STALE_CLIENTID: