net: ixgbevf: fix a missing check of ixgbevf_write_msg_read_ack

If ixgbevf_write_msg_read_ack fails, return its error code upstream
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbevf/vf.c

@@ -508,9 +508,8 @@ static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
 		vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr);
 	}
 
-	ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, IXGBE_VFMAILBOX_SIZE);
-
-	return 0;
+	return ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
+			IXGBE_VFMAILBOX_SIZE);
 }
 
 /**