serial: avoid double free after call ioc4_serial_remove_one

  before goto out5,  soft, control, serial are all assigned to idd
  after finish call ioc4_serial_remove_one, all resources are released
  we need return instead of go on, or double free

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index 3e7da10cebba..c4e30b841f94 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -2883,6 +2883,7 @@ ioc4_serial_attach_one(struct ioc4_driver_data *idd)
         /* error exits that give back resources */
 out5:
         ioc4_serial_remove_one(idd);
+        return ret;
 out4:
         kfree(soft);
 out3: