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;

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);
-