NetworkPkg: fix ASSERT_EFI_ERROR() typos

NetworkPkg: fix ASSERT_EFI_ERROR() typos

A number of code locations use

  ASSERT_EFI_ERROR (BooleanExpression)

instead of

  ASSERT (BooleanExpression)

Fix them.

Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Giri P Mudusuru <giri.p.mudusuru@intel.com>