wifi: ath12k: fix leak in some ath12k_wmi_xxx() functions

wifi: ath12k: fix leak in some ath12k_wmi_xxx() functions

Some wmi functions were using plain 'return ath12k_wmi_cmd_send(...)'
without explicitly handling the error code. This leads to leaking the skb
in case of error.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00218-QCAHKSWPL_SILICONZ-1

Fixes: 66a9448b1b89 ("wifi: ath12k: implement hardware data filter")
Fixes: 593174170919 ("wifi: ath12k: implement WoW enable and wakeup commands")
Fixes: 4a3c212eee0e ("wifi: ath12k: add basic WoW functionalities")
Fixes: 16f474d6d49d ("wifi: ath12k: add WoW net-detect functionality")
Fixes: 1666108c74c4 ("wifi: ath12k: support ARP and NS offload")
Fixes: aab4ae566fa1 ("wifi: ath12k: support GTK rekey offload")
Fixes: 7af01e569529 ("wifi: ath12k: handle keepalive during WoWLAN suspend and resume")
Signed-off-by: Nicolas Escande <nico.escande@gmail.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260422163258.3013872-1-nico.escande@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>