Currently, ath12k_core_hw_group_destroy() accesses its members without any
locking mechanism. This could lead to potential issues if these members are
modified by another thread concurrently.

Hence to mitigate this, use the available mutex lock.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

Fixes: 6f245ea0ec6c ("wifi: ath12k: introduce device group abstraction")
Acked-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 2dd0666959cd4fbdfc17a36b4029fe06fc575d3f..c392f94584ff21051fb05d7843d0d500b1712d69 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -1731,6 +1731,7 @@ static void ath12k_core_hw_group_destroy(struct ath12k_hw_group *ag)
 	if (WARN_ON(!ag))
 		return;
 
+	mutex_lock(&ag->mutex);
 	for (i = 0; i < ag->num_devices; i++) {
 		ab = ag->ab[i];
 		if (!ab)
@@ -1738,6 +1739,7 @@ static void ath12k_core_hw_group_destroy(struct ath12k_hw_group *ag)
 
 		ath12k_core_soc_destroy(ab);
 	}
+	mutex_unlock(&ag->mutex);
 }
 
 static void ath12k_core_hw_group_cleanup(struct ath12k_hw_group *ag)

-- 
2.34.1