qcacmn: Add missing NULL check in DP rx path

Add a missing NULL check for peer object in rx_da_learn API
Also add missing elements in pdev_stats_cmn_tlv structure.

CRs-Fixed: 2357352
Change-Id: Ie54fd0a6a45f00d60420c391098f22b0097de3ac

dp/inc/cdp_txrx_stats_struct.h

@@ -804,6 +804,13 @@ struct cdp_htt_tx_pdev_stats_cmn_tlv {
      * (acked, no ack, flush, TTL, etc)
      */
     uint32_t local_data_freed;
+
+	/* Num MPDUs tried by SW */
+	uint32_t mpdu_tried;
+	/* Num of waiting seq posted in isr completion handler */
+	uint32_t isr_wait_seq_posted;
+	uint32_t tx_active_dur_us_low;
+	uint32_t tx_active_dur_us_high;
 };
 
 struct cdp_htt_tx_pdev_stats_urrn_tlv_v {

dp/wifi3.0/dp_rx.c

@@ -357,7 +357,10 @@ dp_rx_da_learn(struct dp_soc *soc,
 	if (qdf_likely(soc->ast_override_support))
 		return;
 
-	if (ta_peer && (ta_peer->vdev->opmode != wlan_op_mode_ap))
+	if (qdf_unlikely(!ta_peer))
+		return;
+
+	if (qdf_unlikely(ta_peer->vdev->opmode != wlan_op_mode_ap))
 		return;
 
 	if (qdf_unlikely(!hal_rx_msdu_end_da_is_valid_get(rx_tlv_hdr) &&