[libata] clean up module_init() hook of sata_{promise,sil,svw} drivers

The more verbose form existed for decreased differences with the 2.4
backport.  But differences in this area existed anyway, so why not
clean up the 2.6 versions even more.

drivers/scsi/sata_promise.c

@@ -1791,13 +1791,7 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
 
 static int __init pdc_sata_init(void)
 {
-	int rc;
-
-	rc = pci_module_init(&pdc_sata_pci_driver);
-	if (rc)
-		return rc;
-
-	return 0;
+	return pci_module_init(&pdc_sata_pci_driver);
 }
 
 

drivers/scsi/sata_sil.c

@@ -405,13 +405,7 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 
 static int __init sil_init(void)
 {
-	int rc;
-
-	rc = pci_module_init(&sil_pci_driver);
-	if (rc)
-		return rc;
-
-	return 0;
+	return pci_module_init(&sil_pci_driver);
 }
 
 static void __exit sil_exit(void)

drivers/scsi/sata_svw.c

@@ -375,16 +375,9 @@ static struct pci_driver k2_sata_pci_driver = {
 
 static int __init k2_sata_init(void)
 {
-	int rc;
-
-	rc = pci_module_init(&k2_sata_pci_driver);
-	if (rc)
-		return rc;
-
-	return 0;
+	return pci_module_init(&k2_sata_pci_driver);
 }
 
-
 static void __exit k2_sata_exit(void)
 {
 	pci_unregister_driver(&k2_sata_pci_driver);