Wordpress custom loop if/else display

I have pieced together the following code but can't quite get it to work as I need it to.

I'm using Advanced Custom fields to add a PDF upload to my custom post type ('software_pdf' field) so it needs to look at all the posts for that custom post type and if there are no PDF's uploaded to anyone of them, display a message 'No Data Available.'

If there is a PDF attached to any of the posts, it needs to not show the message and instead list just the titles that have a PDF attached.

My issue is that it lists the titles with PDF's attached but it also still shows the 'No Data Available' message and I am stuck on how to resolve that. Any help would be appreciated, thanks!

    $paged = (get_query_var('paged')) ? get_query_var('paged') : 1; 
$custom_loop = new WP_Query(array( 
  'paged' => $paged, 
  'post_type' => 'Products', 
  'cat' => 5,
  'posts_per_page' => 25,
  'orderby' => 'name',
  'order'   => 'ASC',
));

if ( $custom_loop->have_posts() ) :

while ( $custom_loop->have_posts() ) : $custom_loop->the_post();

global $post;
$softwarepdf = get_field('software_pdf');

if (empty( $softwarepdf ) ) { ?>

<p class="nodata">No Data Available.</p>

<? }

else if (!empty( $softwarepdf ) ) { ?>

<p class="productthumbtitle"><?php the_title(); ?></p>

PDF

<? }

endwhile;

wp_reset_query(); 
endif;