iOS - Uncheck row automatically when table scrolled

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    Multiple_Candidate_Cell *cell = (Multiple_Candidate_Cell *) [tableView dequeueReusableCellWithIdentifier : CellIdentifier];
    
    if (cell == nil) {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Multiple_Candidate_Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
        
    }

   UILabel *catListLbl = [[UILabel alloc] initWithFrame:CGRectMake(20, 10, 310, 20)];
        NSString *strValue = [[NSUserDefaults standardUserDefaults]valueForKey:@"service"];

        if ([strValue isEqualToString:@"service"]) 
        {
            catListLbl.text = [serviceArray objectAtIndex:indexPath.row];
            topHaderLabel.text = @"Choose Services";
        }
        else
        {
            catListLbl.text = [catArray objectAtIndex:indexPath.row]; 
            topHaderLabel.text = @"Choose Category";
        }

        catListLbl.textColor = [UIColor colorWithRed:244/255.0 green:29/255.0 blue:94/255.0 alpha:1.0];
        catListLbl.backgroundColor = [UIColor clearColor];
        [cell addSubview:catListLbl];

        if (isSelectAllBtnClicked) {
            UIButton *unCheckBtn = [[UIButton alloc]initWithFrame:CGRectMake(270, 10, 20, 20)];
            [unCheckBtn setBackgroundImage:[UIImage imageNamed:@"checkbox_check.png"] forState:UIControlStateNormal];
            unCheckBtn.tag = indexPath.row + 200;
            //NSLog(@"%i",unCheckBtn.tag);
            [cell addSubview:unCheckBtn];

            [myTableView selectRowAtIndexPath:indexPath animated:YES scrollPosition:UITableViewScrollPositionNone];
            [self tableView:myTableView didSelectRowAtIndexPath:indexPath];

        }
        else {
            UIButton *unCheckBtn = [[UIButton alloc]initWithFrame:CGRectMake(270, 10, 20, 20)];
            [unCheckBtn setBackgroundImage:[UIImage imageNamed:@"checkbox.png"] forState:UIControlStateNormal];
            unCheckBtn.tag = indexPath.row + 200;
            //NSLog(@"%i",unCheckBtn.tag);
            [cell addSubview:unCheckBtn];
        }

        return cell;
}