scsi: qla2xxx: Remove redundant variable initialization

The initialization value of `rc` is wrong. It is unnecessary to initialize
`rc` variables, so remove its initialization operation.

Link: https://lore.kernel.org/r/20200802111527.4928-1-tianjia.zhang@linux.alibaba.com
Fixes: 84905dfe ("scsi: qla2xxx: Fix TMF and Multi-Queue config")
Cc: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_target.c

@@ -2025,7 +2025,7 @@ static void qlt_do_tmr_work(struct work_struct *work)
 	struct qla_tgt_mgmt_cmd *mcmd =
 		container_of(work, struct qla_tgt_mgmt_cmd, work);
 	struct qla_hw_data *ha = mcmd->vha->hw;
-	int rc = EIO;
+	int rc;
 	uint32_t tag;
 	unsigned long flags;