BACKPORT: media: venus: hfi: fix the check in session buffer requirement

Buffer requirement, for different buffer type, comes from video firmware.
While copying these requirements, there is an OOB possibility when the
payload from firmware is more than expected size. Fix the check to avoid
the OOB possibility.

commit b18e36dfd6c9 ("media: venus: hfi: fix the check to handle session
buffer requirement").

Change-Id: I8169c57b2c244c52bac0b4de460b9820707f6ff7
Cc: stable@vger.kernel.org
Fixes: 09c2845e ("[media] media: venus: hfi: add Host Firmware Interface (HFI)")
Reviewed-by: Nathan Hebert <nhebert@chromium.org>
Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Vikash Garodia <quic_vgarodia@quicinc.com>