extcon: max8997: Add missing kfree for info->edev in max8997_muic_remove()

extcon_dev_unregister(info->edev) doest not free info->edev, we need to call
kfree(info->edev) here.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 5ecf176..a4ed30b 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -514,6 +514,7 @@
 
 	extcon_dev_unregister(info->edev);
 
+	kfree(info->edev);
 	kfree(info);
 
 	return 0;