Restore the right values to CPTR_EL2 and CNTHCTL_EL2.

Change-Id: I414417e2aa3d09857f0fc0c6d0996e35f292655e
diff --git a/src/arch/aarch64/exceptions.S b/src/arch/aarch64/exceptions.S
index 947ad28..ebbc23e 100644
--- a/src/arch/aarch64/exceptions.S
+++ b/src/arch/aarch64/exceptions.S
@@ -364,8 +364,8 @@
 	msr hcr_el2, x23
 
 	ldp x24, x25, [x0, #16 * 12]
-	msr cptr_el2, x22
-	msr cnthctl_el2, x23
+	msr cptr_el2, x24
+	msr cnthctl_el2, x25
 
 	ldr x26, [x0, #16 * 13]
 	msr vttbr_el2, x26