ath10k: htt_tx: move lock into id_get function

This is only code refactoring as all call sites of
ath10k_htt_tx_alloc_msdu_id() take the same lock it can be moved into the
id_get function and the assertion dropped.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/ath10k/htt_tx.c

@@ -208,10 +208,10 @@ int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt, struct sk_buff *skb)
 	struct ath10k *ar = htt->ar;
 	int ret;
 
-	lockdep_assert_held(&htt->tx_lock);
-
+	spin_lock_bh(&htt->tx_lock);
 	ret = idr_alloc(&htt->pending_tx, skb, 0,
 			htt->max_num_pending_tx, GFP_ATOMIC);
+	spin_unlock_bh(&htt->tx_lock);
 
 	ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx alloc msdu_id %d\n", ret);
 
@@ -1077,9 +1077,7 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
 	len += sizeof(cmd->hdr);
 	len += sizeof(cmd->mgmt_tx);
 
-	spin_lock_bh(&htt->tx_lock);
 	res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
-	spin_unlock_bh(&htt->tx_lock);
 	if (res < 0)
 		goto err;
 
@@ -1161,9 +1159,7 @@ static int ath10k_htt_tx_32(struct ath10k_htt *htt,
 	struct htt_msdu_ext_desc *ext_desc = NULL;
 	struct htt_msdu_ext_desc *ext_desc_t = NULL;
 
-	spin_lock_bh(&htt->tx_lock);
 	res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
-	spin_unlock_bh(&htt->tx_lock);
 	if (res < 0)
 		goto err;
 
@@ -1363,9 +1359,7 @@ static int ath10k_htt_tx_64(struct ath10k_htt *htt,
 	struct htt_msdu_ext_desc_64 *ext_desc = NULL;
 	struct htt_msdu_ext_desc_64 *ext_desc_t = NULL;
 
-	spin_lock_bh(&htt->tx_lock);
 	res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
-	spin_unlock_bh(&htt->tx_lock);
 	if (res < 0)
 		goto err;