clk: using pm_runtime_resume_and_get instead of pm_runtime_get_sync

Using pm_runtime_resume_and_get is more appropriate
for simplifing code

Reported-by: Zeal Robot <[e-mail]>
Signed-off-by: Minghao Chi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
[[e-mail]: Drop local ret variable too]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk.c

···
 /***           runtime pm          ***/
 static int clk_pm_runtime_get(struct clk_core *core)
 {
-	int ret;
-
 	if (!core->rpm_enabled)
 		return 0;
 
-	ret = pm_runtime_get_sync(core->dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(core->dev);
-		return ret;
-	}
-	return 0;
+	return pm_runtime_resume_and_get(core->dev);
 }
 
 static void clk_pm_runtime_put(struct clk_core *core)