Bluetooth: Controller: Remove conn context NULL check

Remove conn variable NULL check before calling
ull_cp_release_tx() to support conditional compilation of
LLCP_TX_CTRL_BUF_QUEUE_ENABLE variant.

Relates to commit 1ff458e ("Bluetooth: controller:
llcp: fixing tx buffer queue handling").

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

subsys/bluetooth/controller/ll_sw/ull_conn.c

@@ -1570,8 +1570,8 @@ void ull_conn_tx_ack(uint16_t handle, memq_link_t *link, struct node_tx *tx)
 			/* Tx Node not re-used, ensure link->next is non-NULL */
 			LL_ASSERT(link->next);
 
+			/* Pass conn as-is to ull_cp_release_tx(), NULL check is done there */
 			conn = ll_connected_get(handle);
-			LL_ASSERT(conn);
 
 			ull_cp_release_tx(conn, tx);