scsi: ufs: Remove redundant vops NULL check and trivial wrapper

ufshcd_variant_hba_init/exit() check 'if (!hba->vops)' before calling
vops wrappers, but the wrappers already do NULL check internally. Remove
the redundant checks. Also remove ufshcd_variant_hba_exit() entirely
since it only wraps ufshcd_vops_exit() with no added value.

Signed-off-by: Chanwoo Lee <cw9316.lee@samsung.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260529061623.301291-1-cw9316.lee@samsung.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Chanwoo Lee

drivers/ufs/core/ufshcd.c

@@ -9854,28 +9854,15 @@ static int ufshcd_init_clocks(struct ufs_hba *hba)
 
 static int ufshcd_variant_hba_init(struct ufs_hba *hba)
 {
-	int err = 0;
-
-	if (!hba->vops)
-		goto out;
+	int err = ufshcd_vops_init(hba);
 
-	err = ufshcd_vops_init(hba);
 	if (err)
 		dev_err_probe(hba->dev, err,
 			      "%s: variant %s init failed with err %d\n",
 			      __func__, ufshcd_get_var_name(hba), err);
-out:
 	return err;
 }
 
-static void ufshcd_variant_hba_exit(struct ufs_hba *hba)
-{
-	if (!hba->vops)
-		return;
-
-	ufshcd_vops_exit(hba);
-}
-
 static int ufshcd_hba_init(struct ufs_hba *hba)
 {
 	int err;
@@ -9943,7 +9930,7 @@ static void ufshcd_hba_exit(struct ufs_hba *hba)
 		if (hba->eh_wq)
 			destroy_workqueue(hba->eh_wq);
 		ufs_debugfs_hba_exit(hba);
-		ufshcd_variant_hba_exit(hba);
+		ufshcd_vops_exit(hba);
 		ufshcd_setup_vreg(hba, false);
 		ufshcd_setup_clocks(hba, false);
 		ufshcd_setup_hba_vreg(hba, false);