Input: psmouse - fix input_dev leak in lifebook driver

The lifebook driver may register a second input device, but it never
unregisters it. This fixes that.

Signed-off-by: Andres Salomon <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/mouse/lifebook.c

···
 
 static void lifebook_disconnect(struct psmouse *psmouse)
 {
+	struct lifebook_data *priv = psmouse->private;
+
 	psmouse_reset(psmouse);
-	kfree(psmouse->private);
+	if (priv) {
+		input_unregister_device(priv->dev2);
+		kfree(priv);
+	}
 	psmouse->private = NULL;
 }