serial: sunsu: Free memory when probe fails

When su_probe() fails it doesn't free *up and we may have a memory
leak. Fix this by freeing *up before return.

Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed