sched: break out if printing a warning in sched_domain_debug()

checkpatch.pl and Andy Whitcroft noticed the following bug: we did
not break out after printing an error.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/sched.c b/kernel/sched.c
index 1a80ac1..7fefd8a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5534,16 +5534,19 @@
 				printk("\n");
 				printk(KERN_ERR "ERROR: domain->cpu_power not "
 						"set\n");
+				break;
 			}
 
 			if (!cpus_weight(group->cpumask)) {
 				printk("\n");
 				printk(KERN_ERR "ERROR: empty group\n");
+				break;
 			}
 
 			if (cpus_intersects(groupmask, group->cpumask)) {
 				printk("\n");
 				printk(KERN_ERR "ERROR: repeated CPUs\n");
+				break;
 			}
 
 			cpus_or(groupmask, groupmask, group->cpumask);