Description: mk: fix excluding .doctrees when installing docs

The --exclude parameter must be passed before the input directory to
tar, otherwise it's silently ignored and the .doctrees directory is
installed by make install-doc.

Origin: http://dpdk.org/dev/patchwork/patch/25674/
Forwarded: yes
Author: Luca Boccassi <luca.boccassi@gmail.com>
Last-Update: 2017-06-24
---
 mk/rte.sdkinstall.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mk/rte.sdkinstall.mk
+++ b/mk/rte.sdkinstall.mk
@@ -169,7 +169,7 @@ install-sdk:
 install-doc:
 ifneq ($(wildcard $O/doc/html),)
 	$(Q)$(call rte_mkdir, $(DESTDIR)$(docdir))
-	$(Q)tar -cf -      -C $O/doc html --exclude 'html/guides/.*' | \
+	$(Q)tar -cf -      -C $O/doc --exclude 'html/guides/.*' html | \
 	    tar -xf -      -C $(DESTDIR)$(docdir) $(TAR_X_FLAGS)
 endif
 ifneq ($(wildcard $O/doc/*/*/*pdf),)