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>
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index bda6095..14a76f7 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1346,10 +1346,8 @@
 	} 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 */