Allocate aligned buffer to satisfy the IoAlign requirement of high level protocol.

Signed-off-by: lzeng14
Reviewed-by: erictian

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12788 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c

@@ -129,7 +129,7 @@ FreeAlignedBuffer (
   )
 {
   if (Buffer != NULL) {
-    FreePages (Buffer, EFI_SIZE_TO_PAGES (BufferSize));
+    FreeAlignedPages (Buffer, EFI_SIZE_TO_PAGES (BufferSize));
   }
 }