drm/panfrost: Add missing OPP table refcnt decremental

Commit f11b041 ("drm/panfrost: Add fdinfo support GPU load metrics")
retrieves the OPP for the maximum device clock frequency, but forgets to
keep the reference count balanced by putting the returned OPP object. This
eventually leads to an OPP core warning when removing the device.

Fix it by putting OPP objects as many times as they're retrieved.

Also remove an unnecessary whitespace.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Fixes: f11b041 ("drm/panfrost: Add fdinfo support GPU load metrics")
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241105205458.1318989-1-adrian.larumbe@collabora.com

drivers/gpu/drm/panfrost/panfrost_devfreq.c

@@ -38,7 +38,7 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
 		return PTR_ERR(opp);
 	dev_pm_opp_put(opp);
 
-	err =  dev_pm_opp_set_rate(dev, *freq);
+	err = dev_pm_opp_set_rate(dev, *freq);
 	if (!err)
 		ptdev->pfdevfreq.current_frequency = *freq;
 
@@ -182,6 +182,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 	 * if any and will avoid a switch off by regulator_late_cleanup()
 	 */
 	ret = dev_pm_opp_set_opp(dev, opp);
+	dev_pm_opp_put(opp);
 	if (ret) {
 		DRM_DEV_ERROR(dev, "Couldn't set recommended OPP\n");
 		return ret;