[PATCH ath-next] wifi: ath12k: Decrement TID on RX peer frag setup error handling

[Sarika Sharma]

From: Karthikeyan Kathirvel <quic_kathirve at quicinc.com>

Currently, TID is not decremented before peer cleanup, during error
handling path of ath12k_dp_rx_peer_frag_setup(). This could lead to
out-of-bounds access in peer->rx_tid[].

Hence, add a decrement operation for TID, before peer cleanup to
ensures proper cleanup and prevents out-of-bounds access issues when
the RX peer frag setup fails.

Found during code review. Compile tested only.

Signed-off-by: Karthikeyan Kathirvel <quic_kathirve at quicinc.com>
Signed-off-by: Sarika Sharma <quic_sarishar at quicinc.com>
---
 drivers/net/wireless/ath/ath12k/dp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath12k/dp.c b/drivers/net/wireless/ath/ath12k/dp.c
index 6317c6d4c043..c6b10acb643e 100644
--- a/drivers/net/wireless/ath/ath12k/dp.c
+++ b/drivers/net/wireless/ath/ath12k/dp.c
@@ -84,6 +84,7 @@ int ath12k_dp_peer_setup(struct ath12k *ar, int vdev_id, const u8 *addr)
 	ret = ath12k_dp_rx_peer_frag_setup(ar, addr, vdev_id);
 	if (ret) {
 		ath12k_warn(ab, "failed to setup rx defrag context\n");
+		tid--;
 		goto peer_clean;
 	}
 

base-commit: 3d933084a072fd5fb5da54c06a017abc0412c86f
-- 
2.34.1