wifi: ath12k: avoid redundant code in DP Rx error process

wifi: ath12k: avoid redundant code in DP Rx error process

Currently, in DP rx error processing, the MAC id is fetched redundantly from
the same descriptor for each MSDU. To avoid this redundancy, move the fetch
handling before the iteration.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://patch.msgid.link/20241211153432.775335-9-kvalo@kernel.org
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>