It’s okay to use the same image on multiple pages of your website. This doesn’t affect web search at all. Google’s John Mueller has confirmed this on Twitter:
It doesn't affect web search at all. However, if you want to have that image findable in Google Images, we'd have to pick one of the two pages as the landing page.
— ? John ? (@JohnMu) December 3, 2019
How to check if all images are linked correctly
Use the website audit tool in SEOprofiler to check if all images that are linked from your web pages do not show an error code:
