UIImage does not load into table view cell (only for the first two cells) until I scroll

Question

When my view appears, the first two cells are stuck loading (since the images are empty) until I begin to scroll. It might be an asynchronous issue with the way I set up some of my functions, but I'm not sure.

cell.img.image = filteredPosts[indexPath.row].image is called in tableView function.

func loadData(completed: @escaping () -> ())
    {
        db.getDocuments
        { (querySnapshot, error) in
            guard error == nil else { return /**alert here**/}
            self.compPosts = []
            self.filteredPosts = []
            
            for doc in querySnapshot!.documents
            {
                let cPost = CompPost(data: doc.data())
                self.filenameID = doc.get("photoFilename") as! String
                self.filenameID = String(self.filenameID.prefix(36))
                
                cPost.img = self.filenameID + "_CoverImage"
                cPost.pdf = self.filenameID + "_SheetMusic"
                
                cPost.audioURL = doc.get("audioURL") as? String
                cPost.docID = doc.documentID
                
                self.loadImage(post: cPost)
                { image in
                    cPost.image = image
                    print("infunc"); print(cPost.image.description)
                }
                
                self.compPosts.append(cPost)
                self.filteredPosts.append(cPost)
                
                //UIImage(
            }

            completed()
        }
    }

func loadImage(post: CompPost, completion: @escaping (UIImage) -> ())
    {
        var image = UIImage()
        let storageRef = Storage.storage().reference().child("cPosts/\(post.uid!)/CoverImages/\(post.img!)")
        storageRef.getData(maxSize: 25 * 1024 * 1024)
        { (data, error) in
            if error != nil { print(error!.localizedDescription)/**alert**/ }
            else
            {
                image = UIImage(data: data!) ?? UIImage()
                completion(image)
            }
        }
    }