anv: move brw_process_intel_debug_variable to happen early

Currently anv_perf_warn call in anv_compute_heap_size does not ever
report a perf warning. Move debug variable read as the first thing
in case there will be other perf_warn calls added.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/anv_device.c

@@ -268,6 +268,8 @@ anv_physical_device_init(struct anv_physical_device *device,
    VkResult result;
    int fd;
 
+   brw_process_intel_debug_variable();
+
    fd = open(path, O_RDWR | O_CLOEXEC);
    if (fd < 0)
       return vk_error(VK_ERROR_INCOMPATIBLE_DRIVER);
@@ -380,8 +382,6 @@ anv_physical_device_init(struct anv_physical_device *device,
          device->info.max_cs_threads = max_cs_threads;
    }
 
-   brw_process_intel_debug_variable();
-
    device->compiler = brw_compiler_create(NULL, &device->info);
    if (device->compiler == NULL) {
       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);