e1000e: remove unnecessary returns from void functions

...and convert some goto's which simply return to just return.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c
index 33d1b9e..be8335a 100644
--- a/drivers/net/ethernet/intel/e1000e/mac.c
+++ b/drivers/net/ethernet/intel/e1000e/mac.c
@@ -1661,7 +1661,7 @@
 
 	if (!mac->adaptive_ifs) {
 		e_dbg("Not in Adaptive IFS mode!\n");
-		goto out;
+		return;
 	}
 
 	mac->current_ifs_val = 0;
@@ -1672,8 +1672,6 @@
 
 	mac->in_ifs_mode = false;
 	ew32(AIT, 0);
-out:
-	return;
 }
 
 /**
@@ -1689,7 +1687,7 @@
 
 	if (!mac->adaptive_ifs) {
 		e_dbg("Not in Adaptive IFS mode!\n");
-		goto out;
+		return;
 	}
 
 	if ((mac->collision_delta * mac->ifs_ratio) > mac->tx_packet_delta) {
@@ -1712,6 +1710,4 @@
 			ew32(AIT, 0);
 		}
 	}
-out:
-	return;
 }