mk: Fix the location of a temp dir when building installer on win

Author: brson

mk/dist.mk

@@ -241,8 +241,8 @@ dist/$$(PKG_NAME)-$(1).tar.gz: dist-install-dir-$(1)
 	@$(call E, build: $$@)
 # Copy essential gcc components into installer
 ifdef CFG_WINDOWSY_$(1)
-	$$(Q)rm -Rf dist/win-rust-gcc-$(1)
-	$$(Q)$$(CFG_PYTHON) $$(S)src/etc/make-win-dist.py tmp/dist/$$(PKG_NAME)-$(1)-image dist/win-rust-gcc-$(1) $(1)
+	$$(Q)rm -Rf tmp/dist/win-rust-gcc-$(1)
+	$$(Q)$$(CFG_PYTHON) $$(S)src/etc/make-win-dist.py tmp/dist/$$(PKG_NAME)-$(1)-image tmp/dist/win-rust-gcc-$(1) $(1)
 	$$(Q)cp -r $$(S)src/etc/third-party tmp/dist/$$(PKG_NAME)-$(1)-image/share/doc/
 endif
 	$$(Q)$$(S)src/rust-installer/gen-installer.sh \