drm/radeon/kms: Clean up errors in radeon_pm.c

Fix the following errors reported by checkpatch:

ERROR: space required before the open parenthesis '('
Signed-off-by: XueBing Chen <chenxb_99091@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_pm.c

@@ -587,7 +587,7 @@ static ssize_t radeon_hwmon_set_pwm1_enable(struct device *dev,
 	int err;
 	int value;
 
-	if(!rdev->asic->dpm.fan_ctrl_set_mode)
+	if (!rdev->asic->dpm.fan_ctrl_set_mode)
 		return -EINVAL;
 
 	err = kstrtoint(buf, 10, &value);
@@ -789,7 +789,7 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 		return 0;
 
 	/* Skip vddc attribute if get_current_vddc is not implemented */
-	if(attr == &sensor_dev_attr_in0_input.dev_attr.attr &&
+	if (attr == &sensor_dev_attr_in0_input.dev_attr.attr &&
 		!rdev->asic->dpm.get_current_vddc)
 		return 0;