x86: use relative symlink for bzImage

Use relative symlinks so we can refer bzImage from different tree
structures aka via NFS.

Moved the creation of directory + symlink after a successful build of
the boot parts.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index 03e1ede..f48d862 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -97,9 +97,9 @@
 KBUILD_IMAGE                  := $(BOOTIMAGE)
 
 bzImage: vmlinux
-	$(Q)mkdir -p $(objtree)/arch/x86_64/boot
-	$(Q)ln -fsn $(objtree)/arch/x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
 	$(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
+	$(Q)mkdir -p $(objtree)/arch/x86_64/boot
+	$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
 
 bzlilo: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo