qcacld-3.0: Move memory free out of spinlock in ol_tso_seg_list_deinit

Assign the list to null inside the spinlock such that no one else
can access the free nodes. Then free the list outside of the spinlock.
This spinlock was causing a watchdog bark.

Change-Id: I9a34c8c3ea8451004814bcabfcbb81744d71ec45
CRs-Fixed: 1052458

core/dp/txrx/ol_tx.c

@@ -1882,18 +1882,19 @@ void ol_tso_seg_list_deinit(struct ol_txrx_pdev_t *pdev)
 
 	qdf_spin_lock_bh(&pdev->tso_seg_pool.tso_mutex);
 	c_element = pdev->tso_seg_pool.freelist;
-	for (i = 0; i < pdev->tso_seg_pool.pool_size; i++) {
-		temp = c_element->next;
-		qdf_mem_free(c_element);
-		c_element = temp;
-		if (!c_element)
-			break;
-	}
+	i = pdev->tso_seg_pool.pool_size;
 
 	pdev->tso_seg_pool.freelist = NULL;
 	pdev->tso_seg_pool.num_free = 0;
 	pdev->tso_seg_pool.pool_size = 0;
+
 	qdf_spin_unlock_bh(&pdev->tso_seg_pool.tso_mutex);
 	qdf_spinlock_destroy(&pdev->tso_seg_pool.tso_mutex);
+
+	while (i-- > 0 && c_element) {
+		temp = c_element->next;
+		qdf_mem_free(c_element);
+		c_element = temp;
+	}
 }
 #endif /* FEATURE_TSO */