sed-opal: Remove unnecessary ‘0’ values from ret

ret is assigned first, so it does not need to initialize the assignment.

Signed-off-by: Li kunyu <kunyu@nfschina.com>
Link: https://lore.kernel.org/r/20240306100659.106521-1-kunyu@nfschina.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>