wifi: ath12k: Correct tid cleanup when tid setup fails

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Correct tid cleanup when tid setup fails Currently, if any error occurs during ath12k_dp_rx_peer_tid_setup(), the tid value is already incremented, even though the corresponding TID is not actually allocated. Proceed to ath12k_dp_rx_peer_tid_delete() starting from unallocated tid, which might leads to freeing unallocated TID and cause potential crash or out-of-bounds access. Hence, fix by correctly decrementing tid before cleanup to match only the successfully allocated TIDs. Also, remove tid-- from failure case of ath12k_dp_rx_peer_frag_setup(), as decrementing the tid before cleanup in loop will take care of this. Compile tested only.

References

• https://git.kernel.org/stable/c/30cad87978057516c93467516bc481a3eacfd66a
• https://git.kernel.org/stable/c/2ef17d1476ab26bce89764e2f16833d7f52acc38
• https://git.kernel.org/stable/c/907c630e58af9e86e215f3951c7b287bd86d0f15
• https://git.kernel.org/stable/c/6301fe4f209165334d251a1c6da8ae47f93cb32c
• https://git.kernel.org/stable/c/4a2bf707270f897ab8077baee8ed5842a5321686