PS3: gelic: fix memory leak

This fixes the bug that the I/O buffer is not freed at the driver removal.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/ps3_gelic_wireless.c b/drivers/net/ps3_gelic_wireless.c
index 0d32123..1dae1f2 100644
--- a/drivers/net/ps3_gelic_wireless.c
+++ b/drivers/net/ps3_gelic_wireless.c
@@ -2474,6 +2474,8 @@
 
 	pr_debug("%s: <-\n", __func__);
 
+	free_page((unsigned long)wl->buf);
+
 	pr_debug("%s: destroy queues\n", __func__);
 	destroy_workqueue(wl->eurus_cmd_queue);
 	destroy_workqueue(wl->event_queue);