accel/ivpu: Disable PLL after VPU IP reset during FLR

IP reset has to followed by ivpu_pll_disable() to properly enter
reset state.

Fixes: 828d630 ("accel/ivpu: Don't enter d0i3 during FLR")
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231024165353.761507-1-stanislaw.gruszka@linux.intel.com

Author: jlawryno

drivers/accel/ivpu/ivpu_hw_40xx.c

@@ -746,7 +746,7 @@ static int ivpu_hw_40xx_info_init(struct ivpu_device *vdev)
 	return 0;
 }
 
-static int ivpu_hw_40xx_reset(struct ivpu_device *vdev)
+static int ivpu_hw_40xx_ip_reset(struct ivpu_device *vdev)
 {
 	int ret;
 	u32 val;
@@ -768,6 +768,23 @@ static int ivpu_hw_40xx_reset(struct ivpu_device *vdev)
 	return ret;
 }
 
+static int ivpu_hw_40xx_reset(struct ivpu_device *vdev)
+{
+	int ret = 0;
+
+	if (ivpu_hw_40xx_ip_reset(vdev)) {
+		ivpu_err(vdev, "Failed to reset VPU IP\n");
+		ret = -EIO;
+	}
+
+	if (ivpu_pll_disable(vdev)) {
+		ivpu_err(vdev, "Failed to disable PLL\n");
+		ret = -EIO;
+	}
+
+	return ret;
+}
+
 static int ivpu_hw_40xx_d0i3_enable(struct ivpu_device *vdev)
 {
 	int ret;
@@ -913,7 +930,7 @@ static int ivpu_hw_40xx_power_down(struct ivpu_device *vdev)
 
 	ivpu_hw_40xx_save_d0i3_entry_timestamp(vdev);
 
-	if (!ivpu_hw_40xx_is_idle(vdev) && ivpu_hw_40xx_reset(vdev))
+	if (!ivpu_hw_40xx_is_idle(vdev) && ivpu_hw_40xx_ip_reset(vdev))
 		ivpu_warn(vdev, "Failed to reset the VPU\n");
 
 	if (ivpu_pll_disable(vdev)) {