It did not matter.
Loki hauls his unconscious brother onto his back and to safety. Picking up The Hammer was an afterthought.* To those who feel the need to say that no one can carry Thor's hammer other than Thor. This image has been on Tumblr for months and months and I've already heard the arguments that he can and that he can't. I'm here to tell you he's carrying it so don't bother. Thanks!
You can find the image here on tumblr: [link]
You can purchase a print here: [link]