[libata] ahci: Fix lack of command retry after a success error handler.

It should be a mistake introduced by commit 8d899e70c1b3afff.

qc->flags can't be set AC_ERR_*

Signed-off-by: Bian Yu <bianyu@kedacom.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
1 file changed