qcacmn: Fix for Tx software descriptor leak

Release Tx software descriptor if access to ring
fails

Change-Id: I23152301b8042af402b9c605b69a2e68d9a0c85c
CRs-Fixed: 2042201

dp/wifi3.0/dp_tx.c

@@ -1019,6 +1019,7 @@ static qdf_nbuf_t dp_tx_send_msdu_single(struct dp_vdev *vdev, qdf_nbuf_t nbuf,
 				"%s %d : HAL RING Access Failed -- %p\n",
 				__func__, __LINE__, hal_srng);
 		DP_STATS_INC(vdev, tx_i.dropped.ring_full, 1);
+		dp_tx_desc_release(tx_desc, tx_q->desc_pool_id);
 		goto fail_return;
 	}