NFS: cleanup endian type in decode_ds_addr()

port is supposed to be a __be16 here.  The existing code should work
fine, but this is a cleanup.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4filelayoutdev.c

@@ -382,7 +382,7 @@ decode_ds_addr(struct xdr_stream *streamp, gfp_t gfp_flags)
 {
 	struct nfs4_pnfs_ds_addr *da = NULL;
 	char *buf, *portstr;
-	u32 port;
+	__be16 port;
 	int nlen, rlen;
 	int tmp[2];
 	__be32 *p;