scsi: ufs: Delete is_init_prefetch from struct ufs_hba

Without variable is_init_prefetch, the current logic can guarantee
ufshcd_init_icc_levels() will execute only once, delete it now.

Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Asutosh Das <[e-mail]>
Signed-off-by: Bean Huo <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/ufs/ufshcd.c

···
 {
 	int ret;
 
-	if (!hba->is_init_prefetch)
-		ufshcd_init_icc_levels(hba);
+	ufshcd_init_icc_levels(hba);
 
 	/* Add required well known logical units to scsi mid layer */
 	ret = ufshcd_scsi_add_wlus(hba);
···
 	scsi_scan_host(hba->host);
 	pm_runtime_put_sync(hba->dev);
 
-	if (!hba->is_init_prefetch)
-		hba->is_init_prefetch = true;
 out:
 	return ret;
 }

drivers/scsi/ufs/ufshcd.h

···
  * @intr_mask: Interrupt Mask Bits
  * @ee_ctrl_mask: Exception event control mask
  * @is_powered: flag to check if HBA is powered
- * @is_init_prefetch: flag to check if data was pre-fetched in initialization
  * @init_prefetch_data: data pre-fetched during initialization
  * @eh_work: Worker to handle UFS errors that require s/w attention
  * @eeh_work: Worker to handle exception events
···
 	u32 intr_mask;
 	u16 ee_ctrl_mask;
 	bool is_powered;
-	bool is_init_prefetch;
 	struct ufs_init_prefetch init_prefetch_data;
 
 	/* Work Queues */