qcacmn: Fix descriptor leak issue in DP

In the DMA descriptor reap code, the check for NAPI quota is after
Tail pointer is updated. This is causing a descriptor leak in high load
conditions when loop is exited without processing the reaped descriptor.
This change moves the quota check to end of while loop.

Change-Id: I2f3432bf257947f85abc2216a0f2dfc44813c44c
CRs-Fixed: 2137017

dp/wifi3.0/dp_rx.c

@@ -957,9 +957,8 @@ dp_rx_process(struct dp_intr *int_ctx, void *hal_ring, uint32_t quota)
 	 * them in per vdev queue.
 	 * Process the received pkts in a different per vdev loop.
 	 */
-	while (qdf_likely((ring_desc =
-				hal_srng_dst_get_next(hal_soc, hal_ring))
-				&& quota)) {
+	while (qdf_likely(quota && (ring_desc =
+				hal_srng_dst_get_next(hal_soc, hal_ring)))) {
 
 		error = HAL_RX_ERROR_STATUS_GET(ring_desc);
 		ring_id = hal_srng_ring_id_get(hal_ring);

dp/wifi3.0/dp_rx_err.c

@@ -774,9 +774,9 @@ dp_rx_err_process(struct dp_soc *soc, void *hal_ring, uint32_t quota)
 		goto done;
 	}
 
-	while (qdf_likely((ring_desc =
-				hal_srng_dst_get_next(hal_soc, hal_ring))
-				&& quota--)) {
+	while (qdf_likely(quota-- && (ring_desc =
+				hal_srng_dst_get_next(hal_soc, hal_ring)))) {
+
 		DP_STATS_INC(soc, rx.err_ring_pkts, 1);
 
 		error = HAL_RX_ERROR_STATUS_GET(ring_desc);
@@ -843,6 +843,7 @@ dp_rx_err_process(struct dp_soc *soc, void *hal_ring, uint32_t quota)
 		/* Return link descriptor through WBM ring (SW2WBM)*/
 		dp_rx_link_desc_return(soc, ring_desc,
 					HAL_BM_ACTION_PUT_IN_IDLE_LIST);
+
 	}
 
 done:
@@ -913,9 +914,8 @@ dp_rx_wbm_err_process(struct dp_soc *soc, void *hal_ring, uint32_t quota)
 		goto done;
 	}
 
-	while (qdf_likely((ring_desc =
-				hal_srng_dst_get_next(hal_soc, hal_ring))
-				&& quota--)) {
+	while (qdf_likely(quota-- && (ring_desc =
+				hal_srng_dst_get_next(hal_soc, hal_ring)))) {
 
 		/* XXX */
 		wbm_err_src = HAL_RX_WBM_ERR_SRC_GET(ring_desc);
@@ -1248,8 +1248,8 @@ dp_rxdma_err_process(struct dp_soc *soc, uint32_t mac_id, uint32_t quota)
 		return 0;
 	}
 
-	while (qdf_likely((rxdma_dst_ring_desc =
-		hal_srng_dst_get_next(hal_soc, err_dst_srng)) && quota--)) {
+	while (qdf_likely(quota-- && (rxdma_dst_ring_desc =
+		hal_srng_dst_get_next(hal_soc, err_dst_srng)))) {
 
 			rx_bufs_used += dp_rx_err_mpdu_pop(soc, mac_id,
 						rxdma_dst_ring_desc,