scsi: qla2xxx: Check for firmware dump already collected

While allocating firmware dump, check if dump is already collected and do
not re-allocate the buffer.

Link: https://lore.kernel.org/r/20220110050218.3958-17-njavali@marvell.com
Cc: stable@vger.kernel.org
Signed-off-by: NJoe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: NNilesh Javali <njavali@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_init.c

@@ -3482,6 +3482,14 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *vha)
 	struct rsp_que *rsp = ha->rsp_q_map[0];
 	struct qla2xxx_fw_dump *fw_dump;
 
+	if (ha->fw_dump) {
+		ql_dbg(ql_dbg_init, vha, 0x00bd,
+		    "Firmware dump already allocated.\n");
+		return;
+	}
+
+	ha->fw_dumped = 0;
+	ha->fw_dump_cap_flags = 0;
 	dump_size = fixed_size = mem_size = eft_size = fce_size = mq_size = 0;
 	req_q_size = rsp_q_size = 0;