ata: ahci_tegra: call tegra_powergate_power_off only when PM domain is not present

This patch adds check to call legacy power domain API
tegra_powergate_power_off() only when PM domain is not present.

Fixes: 868ed7311c ("ata: ahci_tegra: Add AHCI support for Tegra186")
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/1617915315-13639-2-git-send-email-skomatineni@nvidia.com
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/ata/ahci_tegra.c

@@ -268,6 +268,7 @@ static int tegra_ahci_power_on(struct ahci_host_priv *hpriv)
 disable_power:
 	clk_disable_unprepare(tegra->sata_clk);
 
+	if (!tegra->pdev->dev.pm_domain)
 		tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
 
 disable_regulators:
@@ -287,6 +288,7 @@ static void tegra_ahci_power_off(struct ahci_host_priv *hpriv)
 	reset_control_assert(tegra->sata_cold_rst);
 
 	clk_disable_unprepare(tegra->sata_clk);
+	if (!tegra->pdev->dev.pm_domain)
 		tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
 
 	regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);