Fix vulkan async transfer from call to not submit command buffer to early.

Change-Id: I657758070261a6365975d9c7d61489b1ccb0e437
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219201
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
3 files changed