ovmf: Adjust final tarball location

Let's create the OVMF tarball in the directory where the script was
called from, instead of doing it in the $DESTDIR.

This aligns with the logic being used for creating / extracting the
tarball content, which is already in use by the kata-deploy local build
scripts.

Fixes: #4808

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tools/packaging/static-build/ovmf/build-ovmf.sh

@@ -90,7 +90,8 @@ if [ "${ovmf_build}" == "tdx" ]; then
 	install $build_root/$ovmf_dir/"${build_path_arch}"/DumpTdxEventLog.efi ${install_dir}
 fi
 
+local_dir=${PWD}
 pushd $DESTDIR
-tar -czvf "${ovmf_dir}-${ovmf_build}.tar.gz" "./$PREFIX"
+tar -czvf "${local_dir}/${ovmf_dir}-${ovmf_build}.tar.gz" "./$PREFIX"
 rm -rf $(dirname ./$PREFIX) 
 popd