ata: libahci: Clean-up the ahci_platform_en/disable_phys functions

The phy_ functions handle the NULL pointer case, so there is no need
to skip them if there is a NULL pointer. Moreover, after the error
label there is already no check on the pointer. This patch removes the
unnecessary tests and brings some consistency.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

drivers/ata/libahci_platform.c

@@ -54,9 +54,6 @@ static int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)
 	int rc, i;
 
 	for (i = 0; i < hpriv->nports; i++) {
-		if (!hpriv->phys[i])
-			continue;
-
 		rc = phy_init(hpriv->phys[i]);
 		if (rc)
 			goto disable_phys;
@@ -89,9 +86,6 @@ static void ahci_platform_disable_phys(struct ahci_host_priv *hpriv)
 	int i;
 
 	for (i = 0; i < hpriv->nports; i++) {
-		if (!hpriv->phys[i])
-			continue;
-
 		phy_power_off(hpriv->phys[i]);
 		phy_exit(hpriv->phys[i]);
 	}