IB: Use shorter list_splice_init() for brevity

Convert list_splice() + INIT_LIST_HEAD() to the equivalent list_splice_init()
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/core/fmr_pool.c

@@ -158,8 +158,7 @@ static void ib_fmr_batch_release(struct ib_fmr_pool *pool)
 #endif
 	}
 
-	list_splice(&pool->dirty_list, &unmap_list);
-	INIT_LIST_HEAD(&pool->dirty_list);
+	list_splice_init(&pool->dirty_list, &unmap_list);
 	pool->dirty_len = 0;
 
 	spin_unlock_irq(&pool->pool_lock);

drivers/infiniband/ulp/ipoib/ipoib_main.c

@@ -359,8 +359,7 @@ void ipoib_flush_paths(struct net_device *dev)
 	spin_lock_irq(&priv->tx_lock);
 	spin_lock(&priv->lock);
 
-	list_splice(&priv->path_list, &remove_list);
-	INIT_LIST_HEAD(&priv->path_list);
+	list_splice_init(&priv->path_list, &remove_list);
 
 	list_for_each_entry(path, &remove_list, list)
 		rb_erase(&path->rb_node, &priv->path_tree);