r8169: do not abort when the power management capabilities are disabled

The capabilities of the 8169 can be disabled but it is hardly a reason
to prevent the use the device. The (so far) unusual behavior has been
reported on a MIPS platform by Yoichi Yuasa.
Spotted-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

drivers/net/r8169.c

@@ -1346,10 +1346,8 @@ rtl8169_init_board(struct pci_dev *pdev, struct net_device **dev_out,
 	} else {
 		if (netif_msg_probe(tp)) {
 			printk(KERN_ERR PFX
-			       "Cannot find PowerManagement capability. "
-			       "Aborting.\n");
+			       "PowerManagement capability not found.\n");
 		}
-		goto err_out_mwi;
 	}
 
 	/* make sure PCI base addr 1 is MMIO */