nfs4: fix units bug causing hang on recovery

Note that cl_lease_time is in jiffies.  This can cause a very long wait
in the NFS4ERR_CLID_INUSE case.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -3517,7 +3517,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
 		if (signalled())
 			break;
 		if (loop++ & 1)
-			ssleep(clp->cl_lease_time + 1);
+			ssleep(clp->cl_lease_time / HZ + 1);
 		else
 			if (++clp->cl_id_uniquifier == 0)
 				break;