P2P: Disconnect P2P group on supplicant deinit

When a supplicant is deinited and shutting, disconnect from P2P groups.
This fixes a memory leak on variable dbus_groupobj_path on exiting
supplicant.

Signed-hostap: Nirav Shah <nirav.j2.shah@intel.com>
Signed-hostap: Angie Chinchilla <angie.v.chinchilla@intel.com>

wpa_supplicant/p2p_supplicant.c

@@ -2479,7 +2479,6 @@ void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
 void wpas_p2p_deinit_global(struct wpa_global *global)
 {
 	struct wpa_supplicant *wpa_s, *tmp;
-	char *ifname;
 
 	if (global->p2p == NULL)
 		return;
@@ -2500,12 +2499,9 @@ void wpas_p2p_deinit_global(struct wpa_global *global)
 		}
 		if (tmp == NULL)
 			break;
-		ifname = os_strdup(tmp->ifname);
 		type = wpas_p2p_if_type(tmp->p2p_group_interface);
-		wpa_supplicant_remove_iface(global, tmp, 0);
-		if (ifname)
-			wpa_drv_if_remove(wpa_s, type, ifname);
-		os_free(ifname);
+		/* Disconnect from the P2P group and deinit the interface */
+		wpas_p2p_disconnect(tmp);
 	}
 
 	/*