loader: Fix regression with dEQP-VK.api.object_management.alloc_callback_fail.device
loader: Fix regression with dEQP-VK.api.object_management.alloc_callback_fail.device

When the loader vkCreateDevice trampoline code calls down to
vkCreateDevice don't update the dev->device field with a bogus device
handle.

Change-Id: I703acb5283650ab0013483bda0f478da9b46e3ea

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools