9p: fix whitespace issues

Remove trailing whitespace and blank lines at EOF

Link: http://lkml.kernel.org/m/20180724192918.31165-11-sthemmin@microsoft.comSigned-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>

net/9p/client.c

@@ -333,7 +333,7 @@ struct p9_req_t *p9_tag_lookup(struct p9_client *c, u16 tag)
 	 * buffer to read the data into */
 	tag++;
 
-	if(tag >= c->max_tag) 
+	if (tag >= c->max_tag)
 		return NULL;
 
 	row = tag / P9_ROW_MAXTAG;
@@ -1558,7 +1558,7 @@ p9_client_read(struct p9_fid *fid, u64 offset, struct iov_iter *to, int *err)
 		int count = iov_iter_count(to);
 		int rsize, non_zc = 0;
 		char *dataptr;
-			
+
 		rsize = fid->iounit;
 		if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
 			rsize = clnt->msize - P9_IOHDRSZ;

net/9p/trans_virtio.c

@@ -456,7 +456,7 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
 		out += pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM,
 				      out_pages, out_nr_pages, offs, outlen);
 	}
-		
+
 	/*
 	 * Take care of in data
 	 * For example TREAD have 11.

net/9p/util.c

@@ -138,4 +138,3 @@ int p9_idpool_check(int id, struct p9_idpool *p)
 	return idr_find(&p->pool, id) != NULL;
 }
 EXPORT_SYMBOL(p9_idpool_check);
-