[PATCH] nvme-tcp: reject C2HData for a non-read command

[Yehyeong Lee]

The same check was posted on 2026-08-18:

  https://lore.kernel.org/linux-nvme/20260818110405.590548-1-yhlee@isslab.korea.ac.kr/

It rejects the same PDU in the same place; the two differ only in the
return value and the message text.

Keith, please take only one of them.

Best regards,

Yehyeong Lee