thunderbolt: Fix memory leak if ida_simple_get() fails in enumerate_services()

commit a663e0df upstream.

The svc->key field is not released as it should be if ida_simple_get()
fails so fix that.

Fixes: 9aabb685 ("thunderbolt: Fix to check return value of ida_simple_get")
Cc: stable@vger.kernel.org
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/thunderbolt/xdomain.c

@@ -774,6 +774,7 @@ static void enumerate_services(struct tb_xdomain *xd)
 
 		id = ida_simple_get(&xd->service_ids, 0, 0, GFP_KERNEL);
 		if (id < 0) {
+			kfree(svc->key);
 			kfree(svc);
 			break;
 		}