radv: fix the error code when exporting a semaphore/fence fails

VK_ERROR_INVALID_EXTERNAL_HANDLE is not a valid Vulkan error code
for these functions and it's likely that too many objects are
created instead.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5921>
1 file changed