From: Jason Wang <jasow...@redhat.com>
Date: Tue, 19 Feb 2019 14:53:44 +0800
> When fail, translate_desc() returns negative value, otherwise the
> number of iovs. So we should fail when the return value is negative
> instead of a blindly check against zero.
>
> Detected by CoverityScan, CID# 1442593: Control flow issues (DEADCODE)
>
> Fixes: cc5e71075947 ("vhost: log dirty page correctly")
> Acked-by: Michael S. Tsirkin <m...@redhat.com>
> Reported-by: Stephen Hemminger <step...@networkplumber.org>
> Signed-off-by: Jason Wang <jasow...@redhat.com>
Applied and queued up for -stable, thanks.
