powerpc/perf/hv-24x7: Add missing put_cpu_var()

Add missing put_cpu_var() for 24x7 requests. This went missing in
commit f34b6c7 (3.18-rc3).

Signed-off-by: Sukadev Bhattiprolu <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>

arch/powerpc/perf/hv-24x7.c

···
 
 	ret = add_event_to_24x7_request(event, request_buffer);
 	if (ret)
-		return ret;
+		goto out;
 
 	ret = make_24x7_request(request_buffer, result_buffer);
 	if (ret) {
···
 	*count = be64_to_cpu(resb->elements[0].element_data[0]);
 
 out:
+	put_cpu_var(hv_24x7_reqb);
+	put_cpu_var(hv_24x7_resb);
 	return ret;
 }