[PATCH] drm/amd/pm: fix returnvar.cocci warnings

[kernel test robot]

From: kernel test robot <lkp@xxxxxxxxx>

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_5_ppt.c:235:5-8: Unneeded variable: "ret". Return "0" on line 243


 Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

Fixes: 068ea8bdc0aa ("drm/amd/pm: add smu_v13_0_5_ppt implementation")
CC: Yifan Zhang <yifan1.zhang@xxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: kernel test robot <lkp@xxxxxxxxx>
---

tree:   https://gitlab.freedesktop.org/agd5f/linux.git drm-next
head:   ad72a74cfe7edab15aef40519727a388285e7510
commit: 068ea8bdc0aacb3bba3d1392ed41cc1116a671b8 [96/114] drm/amd/pm: add smu_v13_0_5_ppt implementation
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago

 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_5_ppt.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_5_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_5_ppt.c
@@ -229,18 +229,13 @@ static bool smu_v13_0_5_is_dpm_running(s
 
 static int smu_v13_0_5_post_smu_init(struct smu_context *smu)
 {
-	/*
-	struct amdgpu_device *adev = smu->adev;
-	*/
-	int ret = 0;
-
 	/* allow message will be sent after enable gfxoff on smu 13.0.5 */
 	/*
 	ret = smu_cmn_send_smc_msg(smu, SMU_MSG_EnableGfxOff, NULL);
 	if (ret)
 		dev_err(adev->dev, "Failed to Enable GfxOff!\n");
 	*/
-	return ret;
+	return 0;
 }
 
 static int smu_v13_0_5_mode_reset(struct smu_context *smu, int type)