[SCSI] fusion: honour return value of pci_enable_device() in mpt_resume()

Honour the return value of pci_enable_device(), which
seems to be a desirable thing to do:

  2.6.20-rc4
  gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)

    CC [M]  drivers/message/fusion/mptbase.o
    drivers/message/fusion/mptbase.c: In function `mpt_resume':
    drivers/message/fusion/mptbase.c:1541: warning: ignoring return value
    of `pci_enable_device', declared with attribute warn_unused_result

It also in turn has mptscsih_resume() honour the return value of
mpt_resume()

I'm not sure about the handling of the other potential error cases
in mpt_resume(), of which there appear to be many. But this does
seem to be a good start.

Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: "Moore, Eric" <Eric.Moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/message/fusion/mptbase.c

@@ -1531,6 +1531,7 @@ mpt_resume(struct pci_dev *pdev)
 	MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
 	u32 device_state = pdev->current_state;
 	int recovery_state;
+	int err;
 
 	printk(MYIOC_s_INFO_FMT
 	"pci-resume: pdev=0x%p, slot=%s, Previous operating state [D%d]\n",
@@ -1538,7 +1539,9 @@ mpt_resume(struct pci_dev *pdev)
 
 	pci_set_power_state(pdev, 0);
 	pci_restore_state(pdev);
-	pci_enable_device(pdev);
+	err = pci_enable_device(pdev);
+	if (err)
+		return err;
 
 	/* enable interrupts */
 	CHIPREG_WRITE32(&ioc->chip->IntMask, MPI_HIM_DIM);

drivers/message/fusion/mptscsih.c

@@ -1188,8 +1188,7 @@ mptscsih_suspend(struct pci_dev *pdev, pm_message_t state)
 int
 mptscsih_resume(struct pci_dev *pdev)
 {
-	mpt_resume(pdev);
-	return 0;
+	return mpt_resume(pdev);
 }
 
 #endif