io_uring: fix merge error for async resubmit

A hand-edit while applying this patch on top of a new base resulted in
a reverted check for re-issue, resulting in spurious -EAGAIN errors.

Fixes: 8c130827 ("io_uring: don't alter iopoll reissue fail ret code")
Signed-off-by: Jens Axboe <axboe@kernel.dk>