scsi: lpfc: Fix build error in lpfc_scsi.c

Integration with VMID patches resulted in a build error when
CONFIG_DEBUG_FS is disabled and driver option CONFIG_SCSI_LPFC_DEBUG_FS is
disabled.

It results in an undefined variable:
lpfc_scsi:5595:3: error: 'uuid' undeclared (first use in this function); did you mean 'upid'?

Link: https://lore.kernel.org/r/20210618171842.79710-1-jsmart2021@gmail.com
Fixes: 33c79741 ("scsi: lpfc: vmid: Introduce VMID in I/O path")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_scsi.c

@@ -5455,9 +5455,9 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
 	struct lpfc_io_buf *lpfc_cmd;
 	struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
 	int err, idx;
+	u8 *uuid = NULL;
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 	uint64_t start = 0L;
-	u8 *uuid = NULL;
 
 	if (phba->ktime_on)
 		start = ktime_get_ns();