scsi: isci: Remove redundant initialization of variable 'status'

The variable 'status' is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Link: https://lore.kernel.org/r/20200723142614.991416-1-colin.king@canonical.com
Signed-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/isci/request.c

@@ -3444,7 +3444,7 @@ struct isci_request *isci_tmf_request_from_tag(struct isci_host *ihost,
 int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *idev,
 			 struct sas_task *task, u16 tag)
 {
-	enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+	enum sci_status status;
 	struct isci_request *ireq;
 	unsigned long flags;
 	int ret = 0;