anv: invalidate file descriptor of semaphore sync fd at vkQueueSubmit

We always close the in_fence at the end the anv_cmd_buffer_execbuf()
so when we take it from the semaphore, let's not forget to invalidate
it.

Note that the code leaks the fence_in if we get any error before
reaching the close(). Let's fix that in another patch or better,
rewrite the whole thing!

v2: drop redundant fd = -1 (Jason)

v3: Update commit message (Jason)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/anv_batch_chain.c

@@ -1660,6 +1660,9 @@ anv_cmd_buffer_execbuf(struct anv_device *device,
          assert(!pdevice->has_syncobj);
          if (in_fence == -1) {
             in_fence = impl->fd;
+            if (in_fence == -1)
+               return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
+            impl->fd = -1;
          } else {
             int merge = anv_gem_sync_file_merge(device, in_fence, impl->fd);
             if (merge == -1)
@@ -1667,10 +1670,9 @@ anv_cmd_buffer_execbuf(struct anv_device *device,
 
             close(impl->fd);
             close(in_fence);
+            impl->fd = -1;
             in_fence = merge;
          }
-
-         impl->fd = -1;
          break;
 
       case ANV_SEMAPHORE_TYPE_DRM_SYNCOBJ: