net/9p: correct the variable name in v9fs_get_trans_by_name() comment

The v9fs_get_trans_by_name(char *s) variable name is not "name" but "s".
Signed-off-by: Sun Lianwen <sunlw.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/9p/mod.c

@@ -104,7 +104,7 @@ EXPORT_SYMBOL(v9fs_unregister_trans);
 
 /**
  * v9fs_get_trans_by_name - get transport with the matching name
- * @name: string identifying transport
+ * @s: string identifying transport
  *
  */
 struct p9_trans_module *v9fs_get_trans_by_name(char *s)