score: fix dereference of NULL pointer in local_flush_tlb_page()

Don't dereference vma if it's NULL.

Signed-off-by: Roel Kluin <[e-mail]>
Cc: Chen Liqin <[e-mail]>
Cc: Lennox Wu <[e-mail]>
Cc: Arnd Bergmann <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/score/mm/tlb-score.c

···
 
 void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 {
-	if (!vma || vma->vm_mm->context != 0) {
+	if (vma && vma->vm_mm->context != 0) {
 		unsigned long flags;
 		int oldpid, newpid, idx;
 		unsigned long vma_ASID = vma->vm_mm->context;