x86/32: no need to use set_pte_present in set_pte_vaddr

Impact: cleanup, remove last user of set_pte_present

set_pte_vaddr() is only used to install ptes in fixmaps, and
should never be used to overwrite a present mapping.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Xen-devel <xen-devel@lists.xensource.com>
LKML-Reference: <1237406613-2929-1-git-send-email-jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/mm/pgtable_32.c

@@ -50,7 +50,7 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pteval)
 	}
 	pte = pte_offset_kernel(pmd, vaddr);
 	if (pte_val(pteval))
-		set_pte_present(&init_mm, vaddr, pte, pteval);
+		set_pte_at(&init_mm, vaddr, pte, pteval);
 	else
 		pte_clear(&init_mm, vaddr, pte);