Description: vringh: don't use vringh_kiov_advance() in vringh_iov_xfer()
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2240561
 https://lore.kernel.org/virtualization/20230925103057.104541-1-sgarzare@redhat.com/T/#u
Notes:
 carnil> Introduced with b8c06ad4d67d ("vringh: implement
 carnil> vringh_kiov_advance()") in 5.13-rc1.
Bugs:
upstream: released (6.6-rc5) [7aed44babc7f97e82b38e9a68515e699692cc100]
6.1-upstream-stable: released (6.1.57) [3a72decd6b49ff11a894aabd4d9b3025f046fe61]
5.10-upstream-stable: N/A "Vulnerable code introduced later"
4.19-upstream-stable: N/A "Vulnerable code introduced later"
sid: released (6.5.8-1)
6.1-bookworm-security: released (6.1.64-1)
5.10-bullseye-security: N/A "Vulnerable code introduced later"
4.19-buster-security: N/A "Vulnerable code introduced later"