util: Return void on iova_tree_remove

It always returns IOVA_OK so nobody uses it.

Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20220427154931.3166388-1-eperezma@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

include/qemu/iova-tree.h

@@ -72,10 +72,8 @@ int iova_tree_insert(IOVATree *tree, const DMAMap *map);
  * provided.  The range does not need to be exactly what has inserted,
  * all the mappings that are included in the provided range will be
  * removed from the tree.  Here map->translated_addr is meaningless.
- *
- * Return: 0 if succeeded, or <0 if error.
  */
-int iova_tree_remove(IOVATree *tree, const DMAMap *map);
+void iova_tree_remove(IOVATree *tree, const DMAMap *map);
 
 /**
  * iova_tree_find:

util/iova-tree.c

@@ -164,15 +164,13 @@ void iova_tree_foreach(IOVATree *tree, iova_tree_iterator iterator)
     g_tree_foreach(tree->tree, iova_tree_traverse, iterator);
 }
 
-int iova_tree_remove(IOVATree *tree, const DMAMap *map)
+void iova_tree_remove(IOVATree *tree, const DMAMap *map)
 {
     const DMAMap *overlap;
 
     while ((overlap = iova_tree_find(tree, map))) {
         g_tree_remove(tree->tree, overlap);
     }
-
-    return IOVA_OK;
 }
 
 /**