scsi: mpt3sas: set default value for cb_idx

No functional change
Signed-off-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpt3sas/mpt3sas_base.c

@@ -899,7 +899,7 @@ static u8
 _base_get_cb_idx(struct MPT3SAS_ADAPTER *ioc, u16 smid)
 {
 	int i;
-	u8 cb_idx;
+	u8 cb_idx = 0xFF;
 
 	if (smid < ioc->hi_priority_smid) {
 		i = smid - 1;
@@ -910,8 +910,7 @@ _base_get_cb_idx(struct MPT3SAS_ADAPTER *ioc, u16 smid)
 	} else if (smid <= ioc->hba_queue_depth) {
 		i = smid - ioc->internal_smid;
 		cb_idx = ioc->internal_lookup[i].cb_idx;
-	} else
-		cb_idx = 0xFF;
+	}
 	return cb_idx;
 }