qcacmn: Handle the nbuf sanity failure gracefully

Th nbuf sanity can fail in case when HW posts the
same buffer twice. This case can be handled gracefully
by just skipping the processing of the corresponding rx
descriptor.

Change-Id: I471bb9f364a51937e85249996e427f15872bda97
CRs-Fixed: 2738558

dp/wifi3.0/dp_stats.c

@@ -6055,6 +6055,8 @@ void dp_txrx_path_stats(struct dp_soc *soc)
 			       soc->stats.rx.err.raw_frm_drop);
 		DP_PRINT_STATS("Rx stale link desc cookie: %d",
 			       pdev->soc->stats.rx.err.invalid_link_cookie);
+		DP_PRINT_STATS("Rx nbuf sanity fails: %d",
+			       pdev->soc->stats.rx.err.nbuf_sanity_fail);
 
 		DP_PRINT_STATS("Reo Statistics");
 		DP_PRINT_STATS("near_full: %u ", soc->stats.rx.near_full);
@@ -6617,6 +6619,9 @@ dp_print_soc_rx_stats(struct dp_soc *soc)
 	DP_PRINT_STATS("Rx stale link desc cookie: %d",
 		       soc->stats.rx.err.invalid_link_cookie);
 
+	DP_PRINT_STATS("Rx nbuf sanity fail: %d",
+		       soc->stats.rx.err.nbuf_sanity_fail);
+
 	for (i = 0; i < HAL_RXDMA_ERR_MAX; i++) {
 		index += qdf_snprint(&rxdma_error[index],
 				DP_RXDMA_ERR_LENGTH - index,