Hi @SwapnilSolanki-4729, SQL Server Migration Assistant currently supports database migration for Microsoft Access, DB2, MySQL, Oracle, and SAP ASE.
To fulfil your requirements, you can create SSIS package and achieve the objective. You need to write code in package to loop through all the tables in your on-premise DB but this gives you control over any data transformation you need to perform too. You can refer to below article for more details:
https://www.mssqltips.com/sqlservertip/3425/steps-to-import-mariadb-objects-and-data-into-sql-server/
Also, there are 3rd party tools available to migrate from MariaDB to Azure Sql but they come at a cost.
https://www.dbsofts.com/articles/mariadb_to_azure/