MIPS: Remove incorrect NULL check in local_flush_tlb_page()
MIPS: Remove incorrect NULL check in local_flush_tlb_page()

We check that the struct vm_area_struct pointer vma is NULL and then
dereference it a few lines below. The intent was to make sure vma is
not NULL but this is not necessary since the bug pre-dates GIT history
and seem to never have caused a problem. The tlb-4k and tlb-8k versions
of local_flush_tlb_page() don't bother checking if vma is NULL, also
vma is dereferenced before being passed to local_flush_tlb_page(),
thus it is safe to remove this NULL check.

Signed-off-by: Emil Goode <8f82f727ceef69ddbc9c99a3e77927715fed00fe@gmail.com>
Reviewed-by: Jonas Gorski <8a35dafb21031d5c8209b1c0c47aaf0390b56a0e@openwrt.org>
Acked-by: Maciej W. Rozycki <78f3a3d9d6e4d907a7d12e475d0a751d6b7e256b@linux-mips.org>
Cc: Paul Gortmaker <ae947f3c8df96e1dc851c5e3e5a930ce6d3f1f74@windriver.com>
Cc: John Crispin <be6487f9df4dce44a640672d6c07330104d43593@openwrt.org>
Cc: 562397917b9a8bf316569a848858b12fb417723f@linux-mips.org
Cc: 2578944098299abf708b08eff6fcf60565553586@vger.kernel.org
Cc: f53ea525f6414247fcc20381d09df7f5c8404aa1@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7264/
Signed-off-by: Ralf Baechle <92f48d309cda194c8eda36aa8f9ae28c488fa208@linux-mips.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs