KVM: PPC: Book3S: PR: Fix C/R bit setting

Commit 9308ab8e2d made C/R HTAB updates go byte-wise into the target HTAB.
However, it didn't update the guest's copy of the HTAB, but instead the
host local copy of it.

Write to the guest's HTAB instead.

Signed-off-by: Alexander Graf <agraf@suse.de>
CC: Paul Mackerras <paulus@samba.org>
Acked-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kvm/book3s_32_mmu.c b/arch/powerpc/kvm/book3s_32_mmu.c
index 76a64ce..60fc3f4 100644
--- a/arch/powerpc/kvm/book3s_32_mmu.c
+++ b/arch/powerpc/kvm/book3s_32_mmu.c
@@ -270,7 +270,7 @@
 	   page */
 	if (found) {
 		u32 pte_r = pteg[i+1];
-		char __user *addr = (char __user *) &pteg[i+1];
+		char __user *addr = (char __user *) (ptegp + (i+1) * sizeof(u32));
 
 		/*
 		 * Use single-byte writes to update the HPTE, to