Loader: Fix out-of-memory handling in loaderGetDeviceRegistryFiles
Loader: Fix out-of-memory handling in loaderGetDeviceRegistryFiles

Wrongly handled OOM error causes
dEQP-VK.api.object_management.alloc_callback_fail test to fail, because wrong
error code is returned.

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers