the implicit sync flag gets set at the beginning at the function,
but I used = instead of |= later.
Fixes: bec92850270 "radv: Stop using memory type indices."
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4814>
 
                heap_index = device->physical_device->memory_properties.memoryTypes[pAllocateInfo->memoryTypeIndex].heapIndex;
                domain = device->physical_device->memory_domains[pAllocateInfo->memoryTypeIndex];
-               flags = device->physical_device->memory_flags[pAllocateInfo->memoryTypeIndex];
+               flags |= device->physical_device->memory_flags[pAllocateInfo->memoryTypeIndex];
 
                if (!dedicate_info && !import_info && (!export_info || !export_info->handleTypes)) {
                        flags |= RADEON_FLAG_NO_INTERPROCESS_SHARING;