e1000e: remove unnecessary break after return

Signed-off-by: Fabian Frederick <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/intel/e1000e/82571.c

···
 		break;
 	default:
 		return -E1000_ERR_PHY;
-		break;
 	}
 
 	/* This can only be done after all function pointers are setup. */
···
 		break;
 	case e1000_82573:
 		return e1000e_get_phy_id(hw);
-		break;
 	case e1000_82574:
 	case e1000_82583:
 		ret_val = e1e_rphy(hw, MII_PHYSID1, &phy_id);
···
 		break;
 	default:
 		return -E1000_ERR_PHY;
-		break;
 	}
 
 	return 0;
···
 		break;
 	default:
 		return -E1000_ERR_PHY;
-		break;
 	}
 
 	if (ret_val)

drivers/net/ethernet/intel/e1000e/ethtool.c

···
 		switch (hw->mac.type) {
 		case e1000_80003es2lan:
 			return e1000_set_es2lan_mac_loopback(adapter);
-			break;
 		case e1000_82571:
 		case e1000_82572:
 			return e1000_set_82571_fiber_loopback(adapter);
-			break;
 		default:
 			rctl = er32(RCTL);
 			rctl |= E1000_RCTL_LBM_TCVR;

drivers/net/ethernet/intel/e1000e/ich8lan.c

···
 		break;
 	default:
 		return -E1000_ERR_PHY;
-		break;
 	}
 
 	return 0;

drivers/net/ethernet/intel/e1000e/mac.c

···
 	default:
 		e_dbg("Flow control param set incorrectly\n");
 		return -E1000_ERR_CONFIG;
-		break;
 	}
 
 	ew32(TXCW, txcw);