edac: i5400: improve handling of pci_enable_device() return value

-EIO is not the only error code that pci_enable_device() may return, also
the set of errors can be enhanced in future.  We should compare return
code with zero, not with concrete error value.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jeff Roberson <jroberson@jroberson.net>
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/edac/i5400_edac.c

@@ -1348,7 +1348,7 @@ static int __devinit i5400_init_one(struct pci_dev *pdev,
 
 	/* wake up device */
 	rc = pci_enable_device(pdev);
-	if (rc == -EIO)
+	if (rc)
 		return rc;
 
 	/* now probe and enable the device */