sched/deadline: Clean up various coding style details

- Fixed style error: Missing space before the open parenthesis
- Fixed style warnings: 2x Missing blank line after declaration

One warning left: else after return
 (I don't feel comfortable fixing that without side effects)
Signed-off-by: Mario Leinweber <marioleinweber@web.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/20180302182007.28691-1-marioleinweber@web.deSigned-off-by: Ingo Molnar <mingo@kernel.org>

kernel/sched/cpudeadline.c

@@ -42,8 +42,9 @@ static void cpudl_heapify_down(struct cpudl *cp, int idx)
 		return;
 
 	/* adapted from lib/prio_heap.c */
-	while(1) {
+	while (1) {
 		u64 largest_dl;
+
 		l = left_child(idx);
 		r = right_child(idx);
 		largest = idx;
@@ -131,6 +132,7 @@ int cpudl_find(struct cpudl *cp, struct task_struct *p,
 		return 1;
 	} else {
 		int best_cpu = cpudl_maximum(cp);
+
 		WARN_ON(best_cpu != -1 && !cpu_present(best_cpu));
 
 		if (cpumask_test_cpu(best_cpu, &p->cpus_allowed) &&
@@ -205,6 +207,7 @@ void cpudl_set(struct cpudl *cp, int cpu, u64 dl)
 	old_idx = cp->elements[cpu].idx;
 	if (old_idx == IDX_INVALID) {
 		int new_idx = cp->size++;
+
 		cp->elements[new_idx].dl = dl;
 		cp->elements[new_idx].cpu = cpu;
 		cp->elements[cpu].idx = new_idx;