HID: hyperv: Properly disconnect the input device

When we unload the mouse driver, properly disconnect the input device.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reported-by: Fuzhou Chen <fuzhouch@microsoft.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index 0c33ae9..4066324 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -548,6 +548,7 @@
 	struct mousevsc_dev *input_dev = hv_get_drvdata(dev);
 
 	vmbus_close(dev->channel);
+	hid_hw_stop(input_dev->hid_device);
 	hid_destroy_device(input_dev->hid_device);
 	mousevsc_free_device(input_dev);