Coverity found this obvious bug
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*** CID 1442593: Control flow issues (DEADCODE)
/drivers/vhost/vhost.c: 1795 in log_used()
1789 ret = translate_desc(vq, (uintptr_t)vq->used + used_offset,
1790 len, iov, 64, VHOST_ACCESS_WO);
1791 if (ret)
1792 return ret;
1793
1794 for (i = 0; i < ret; i++) {
>>> CID 1442593: Control flow issues (DEADCODE)
>>> Execution cannot reach this statement: "ret = log_write_hva(vq,
>>> (ui...".
1795 ret = log_write_hva(vq, (uintptr_t)iov[i].iov_base,
1796 iov[i].iov_len);
1797 if (ret)
1798 return ret;
1799 }
1800
