diff --git a/kernel/fork.c b/kernel/fork.c
index d896e9ca38b0cccc5de00a0564ecd22179fa2c06..f0b58479534f07dfd55d57a117b4055d80c829b5 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -550,8 +550,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
 			goto out;
 	}
 	/* a new mm has just been created */
-	arch_dup_mmap(oldmm, mm);
-	retval = 0;
+	retval = arch_dup_mmap(oldmm, mm);
 out:
 	up_write(&mm->mmap_sem);
 	flush_tlb_mm(oldmm);