scsi: ufs: Remove an unpaired ufshcd_scsi_unblock_requests() in err_handler()

Commit 5586dd8e ("scsi: ufs: Fix a race condition between error handler
and runtime PM ops") moves the ufshcd_scsi_block_requests() inside
err_handler() but forgets to remove the ufshcd_scsi_unblock_requests() in
the early return path. Correct the mistake.

Link: https://lore.kernel.org/r/1597798958-24322-1-git-send-email-cang@codeaurora.org
Fixes: 5586dd8e ("scsi: ufs: Fix a race condition between error handler and runtime PM ops")
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Hongwu Su<hongwus@codeaurora.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufshcd.c

@@ -5679,7 +5679,6 @@ static void ufshcd_err_handler(struct work_struct *work)
 		if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
 			hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
 		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		ufshcd_scsi_unblock_requests(hba);
 		return;
 	}
 	ufshcd_set_eh_in_progress(hba);