scsi: qla4xxx: Remove unneeded if-null-free check

Eliminate the following coccicheck warning:

drivers/scsi/qla4xxx/ql4_os.c:4175:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:4196:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:4215:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:6400:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:6402:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:6555:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:6557:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:7838:2-7: WARNING:
 NULL check before some freeing functions is not needed.
drivers/scsi/qla4xxx/ql4_os.c:7840:2-7: WARNING:
 NULL check before some freeing functions is not needed.

Link: https://lore.kernel.org/r/20210409120345.6447-1-linqiheng@huawei.comSigned-off-by: Qiheng Lin <linqiheng@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla4xxx/ql4_os.c

@@ -4171,8 +4171,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
 		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
 				  ha->queues_dma);
 
-	if (ha->fw_dump)
-		vfree(ha->fw_dump);
+	vfree(ha->fw_dump);
 
 	ha->queues_len = 0;
 	ha->queues = NULL;
@@ -4192,8 +4191,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
 
 	dma_pool_destroy(ha->chap_dma_pool);
 
-	if (ha->chap_list)
-		vfree(ha->chap_list);
+	vfree(ha->chap_list);
 	ha->chap_list = NULL;
 
 	dma_pool_destroy(ha->fw_ddb_dma_pool);
@@ -4211,8 +4209,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
 		iounmap(ha->reg);
 	}
 
-	if (ha->reset_tmplt.buff)
-		vfree(ha->reset_tmplt.buff);
+	vfree(ha->reset_tmplt.buff);
 
 	pci_release_regions(ha->pdev);
 }
@@ -6396,10 +6393,8 @@ static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
 	}
 
 exit_check:
-	if (fw_tddb)
-		vfree(fw_tddb);
-	if (tmp_tddb)
-		vfree(tmp_tddb);
+	vfree(fw_tddb);
+	vfree(tmp_tddb);
 	return ret;
 }
 
@@ -6551,10 +6546,8 @@ static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
 	}
 
 exit_check:
-	if (fw_tddb)
-		vfree(fw_tddb);
-	if (tmp_tddb)
-		vfree(tmp_tddb);
+	vfree(fw_tddb);
+	vfree(tmp_tddb);
 	return ret;
 }
 
@@ -7834,10 +7827,8 @@ static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 		ret = -ESRCH;
 
 exit_ddb_logout:
-	if (flash_tddb)
-		vfree(flash_tddb);
-	if (tmp_tddb)
-		vfree(tmp_tddb);
+	vfree(flash_tddb);
+	vfree(tmp_tddb);
 	if (fw_ddb_entry)
 		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);