bonding: Invert test

Make the error case return early.
Make the normal return at the bottom of the function.
Reduces indent for readability.

Signed-off-by: Joe Perches <[e-mail]>
Reviewed-by: Ding Tianhong <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/bonding/bond_3ad.c

···
 		}
 	}
 
-	if (aggregator) {
-		ad_info->aggregator_id = aggregator->aggregator_identifier;
-		ad_info->ports = aggregator->num_of_ports;
-		ad_info->actor_key = aggregator->actor_oper_aggregator_key;
-		ad_info->partner_key = aggregator->partner_oper_aggregator_key;
-		ether_addr_copy(ad_info->partner_system,
-				aggregator->partner_system.mac_addr_value);
-		return 0;
-	}
+	if (!aggregator)
+		return -1;
 
-	return -1;
+	ad_info->aggregator_id = aggregator->aggregator_identifier;
+	ad_info->ports = aggregator->num_of_ports;
+	ad_info->actor_key = aggregator->actor_oper_aggregator_key;
+	ad_info->partner_key = aggregator->partner_oper_aggregator_key;
+	ether_addr_copy(ad_info->partner_system,
+			aggregator->partner_system.mac_addr_value);
+	return 0;
 }
 
 /* Wrapper used to hold bond->lock so no slave manipulation can occur */