ARM: remove unnecessary cache flush

This cache flush occurs when we first insert a page into the page
tables, where a page did not exist previously.  There can be no
cache lines associated with this virtual mapping, so this cache
flush is redundant.

Tested-by: Mike Rapoport <mike@compulab.co.il>
Tested-by: Mikael Pettersson <mikpe at it.uu.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/fault-armv.c

@@ -133,8 +133,6 @@ make_coherent(struct address_space *mapping, struct vm_area_struct *vma,
 	flush_dcache_mmap_unlock(mapping);
 	if (aliases)
 		do_adjust_pte(vma, addr, pfn, ptep);
-	else
-		flush_cache_page(vma, addr, pfn);
 }
 
 /*