scsi: ufs: Remove the sdev_rpmb member

Since the sdev_rpmb member of struct ufs_hba is only used inside
ufshcd_scsi_add_wlus(), convert it into a local variable.

Link: https://lore.kernel.org/r/20211203231950.193369-5-bvanassche@acm.orgSuggested-by: Jaegeuk Kim <jaegeuk@kernel.org>
Tested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufshcd.c

@@ -7412,7 +7412,7 @@ static inline void ufshcd_blk_pm_runtime_init(struct scsi_device *sdev)
 static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
 {
 	int ret = 0;
-	struct scsi_device *sdev_boot;
+	struct scsi_device *sdev_boot, *sdev_rpmb;
 
 	hba->sdev_ufs_device = __scsi_add_device(hba->host, 0, 0,
 		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_UFS_DEVICE_WLUN), NULL);
@@ -7423,14 +7423,14 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
 	}
 	scsi_device_put(hba->sdev_ufs_device);
 
-	hba->sdev_rpmb = __scsi_add_device(hba->host, 0, 0,
+	sdev_rpmb = __scsi_add_device(hba->host, 0, 0,
 		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_RPMB_WLUN), NULL);
-	if (IS_ERR(hba->sdev_rpmb)) {
-		ret = PTR_ERR(hba->sdev_rpmb);
+	if (IS_ERR(sdev_rpmb)) {
+		ret = PTR_ERR(sdev_rpmb);
 		goto remove_sdev_ufs_device;
 	}
-	ufshcd_blk_pm_runtime_init(hba->sdev_rpmb);
-	scsi_device_put(hba->sdev_rpmb);
+	ufshcd_blk_pm_runtime_init(sdev_rpmb);
+	scsi_device_put(sdev_rpmb);
 
 	sdev_boot = __scsi_add_device(hba->host, 0, 0,
 		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_BOOT_WLUN), NULL);

drivers/scsi/ufs/ufshcd.h

@@ -809,7 +809,6 @@ struct ufs_hba {
 	 * "UFS device" W-LU.
 	 */
 	struct scsi_device *sdev_ufs_device;
-	struct scsi_device *sdev_rpmb;
 
 #ifdef CONFIG_SCSI_UFS_HWMON
 	struct device *hwmon_device;