e1000e: cleanup: remove unnecessary assignments just before returning

Just return the appropriate value.

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/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c
index 70e8eb6..323cb14 100644
--- a/drivers/net/ethernet/intel/e1000e/phy.c
+++ b/drivers/net/ethernet/intel/e1000e/phy.c
@@ -1064,8 +1064,7 @@
 		break;
 	default:
 		e_dbg("Flow control param set incorrectly\n");
-		ret_val = -E1000_ERR_CONFIG;
-		return ret_val;
+		return -E1000_ERR_CONFIG;
 	}
 
 	ret_val = e1e_wphy(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);