Staging: hv: mousevsc: Free allocated memory in free_input_device()

Free all allocated memory in free_input_device().
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/hv_mouse.c

@@ -199,6 +199,8 @@ static struct mousevsc_dev *alloc_input_device(struct hv_device *device)
 static void free_input_device(struct mousevsc_dev *device)
 {
 	WARN_ON(atomic_read(&device->ref_count) != 0);
+	kfree(device->hid_desc);
+	kfree(device->report_desc);
 	kfree(device);
 }