staging: media: ipu3: use pm_runtime_resume_and_get()

Commit dd8088d5 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
added pm_runtime_resume_and_get() in order to automatically handle
dev->power.usage_count decrement on errors.

Use the new API, in order to cleanup the error check logic.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/ipu3/ipu3.c

@@ -392,10 +392,9 @@ int imgu_s_stream(struct imgu_device *imgu, int enable)
 	}
 
 	/* Set Power */
-	r = pm_runtime_get_sync(dev);
+	r = pm_runtime_resume_and_get(dev);
 	if (r < 0) {
 		dev_err(dev, "failed to set imgu power\n");
-		pm_runtime_put(dev);
 		return r;
 	}