scsi: pm8001: Remove redundant initialization of variable 'rv'

The variable 'rv' is being initialized with a value that is never read, it
is being updated later on. The assignment is redundant and can be removed.

Link: https://lore.kernel.org/r/20210804143319.115340-1-colin.king@canonical.comSigned-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addresses-Coverity: ("Unused value")

drivers/scsi/pm8001/pm8001_hwi.c

@@ -1323,7 +1323,7 @@ int pm8001_mpi_build_cmd(struct pm8001_hba_info *pm8001_ha,
 	void *pMessage;
 	unsigned long flags;
 	int q_index = circularQ - pm8001_ha->inbnd_q_tbl;
-	int rv = -1;
+	int rv;
 
 	WARN_ON(q_index >= PM8001_MAX_INB_NUM);
 	spin_lock_irqsave(&circularQ->iq_lock, flags);