The return value should be non-zero under error conditions.
Remove nvme_free(dev) to avoid free dev more than once.
Signed-off-by: NWenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: NMatias Bjørling <m@bjorling.me>
Signed-off-by: NJens Axboe <axboe@fb.com>