When requested to ignore errors, just do nothing and let the
request complete normally.  This means that the request will
be accounted correctly.

This is what commit 40dce4ee61 ("scsi-disk: fix rerror/werror=ignore",
2018-10-19) was supposed to do:

Fixes: 40dce4ee61 ("scsi-disk: fix rerror/werror=ignore", 2018-10-19)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/scsi/scsi-disk.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 18ab777017..36aa872445 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -253,8 +253,7 @@ static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
 
     blk_error_action(s->qdev.conf.blk, action, is_read, error);
     if (action == BLOCK_ERROR_ACTION_IGNORE) {
-        scsi_req_complete(&r->req, 0);
-        return true;
+        return false;
     }
 
     if (action == BLOCK_ERROR_ACTION_STOP) {
-- 
2.29.2