iommu/tegra241-cmdqv: Simplify deinit flow in tegra241_cmdqv_remove_vintf()

iommu/tegra241-cmdqv: Simplify deinit flow in tegra241_cmdqv_remove_vintf()

The current flow of tegra241_cmdqv_remove_vintf() is:
 1. For each LVCMDQ, tegra241_vintf_remove_lvcmdq():
    a. Disable the LVCMDQ HW
    b. Release the LVCMDQ SW resource
 2. For current VINTF, tegra241_vintf_hw_deinit():
    c. Disable all LVCMDQ HWs
    d. Disable VINTF HW

Obviously, the step 1.a and the step 2.c are redundant.

Since tegra241_vintf_hw_deinit() disables all of its LVCMDQ HWs, it could
simplify the flow in tegra241_cmdqv_remove_vintf() by calling that first:
 1. For current VINTF, tegra241_vintf_hw_deinit():
    a. Disable all LVCMDQ HWs
    b. Disable VINTF HW
 2. Release all LVCMDQ SW resources

Drop tegra241_vintf_remove_lvcmdq(), and move tegra241_vintf_free_lvcmdq()
as the new step 2.

Link: https://patch.msgid.link/r/86c97c8c4ee9ca192e7e7fa3007c10399d792ce6.1752126748.git.nicolinc@nvidia.com
Acked-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>