C++错误(从不兼容的类型"void"分配给树节点*)

我正在实现一个树节点函数。但是我被困在删除节点上。 它不断给出此错误。我已经尝试过使用 TreeNode* 函数，它完全有效，但是当我尝试将其更改为 void 函数时，这个函数不断出现错误。

我正在尝试将其更改为空函数。

void Tree::deleteFrom(TreeNode* startintPoint, int value)

//from example in class, deleting a node

if (startintPoint == nullptr)
{
return;
}
else if (startintPoint->left != nullptr && value < startintPoint->value)
{
startintPoint->left = deleteFrom(startintPoint->left, value);
}
else if (startintPoint->right != nullptr && value > startintPoint->value)
{
startintPoint->right = deleteFrom(startintPoint->right, value);
}
else
{
if (startintPoint->left == nullptr && startintPoint->right == nullptr)
{
delete startintPoint;
startintPoint = nullptr;
}
else if (startintPoint->left == nullptr)
{
TreeNode* temp = startintPoint;
startintPoint = startintPoint->right;
delete temp;
}
else if (startintPoint->right == nullptr)
{
TreeNode* temp = startintPoint;
startintPoint = startintPoint->left;
delete temp;
}
else
{
TreeNode* temp = findMinValue(startintPoint->right);
startintPoint->value = temp->value;
startintPoint->right = deleteFrom(startintPoint->right, temp->value);
}

}
return startintPoint;
}