powerpc/mm: Remove a redundant test in do_page_fault()

The result of (trap == 0x400) is already in is_exec.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2017-04-19 14:56:28 +02:00 • committed by Michael Ellerman
commit 97a011e69b