[SCSI] qla4xxx: Silence gcc warning

Fix followig gcc warning:-
drivers/scsi/qla4xxx/ql4_os.c: In function ‘qla4xxx_sysfs_ddb_get_param’:
drivers/scsi/qla4xxx/ql4_os.c:6279:
warning: comparison is always true due to limited range of data type
drivers/scsi/qla4xxx/ql4_os.c:6290:
warning: comparison is always true due to limited range of data type
drivers/scsi/qla4xxx/ql4_os.c: In function ‘qla4xxx_sysfs_ddb_delete’:
drivers/scsi/qla4xxx/ql4_os.c:6593:
warning: ‘ddb_size’ may be used uninitialized in this function
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/qla4xxx/ql4_os.c

@@ -6276,8 +6276,7 @@ qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 			rc = sprintf(buf, "\n");
 		break;
 	case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
-		if ((fnode_sess->discovery_parent_idx) >= 0  &&
-		    (fnode_sess->discovery_parent_idx < MAX_DDB_ENTRIES))
+		if (fnode_sess->discovery_parent_idx < MAX_DDB_ENTRIES)
 			parent_index = fnode_sess->discovery_parent_idx;
 
 		rc = sprintf(buf, "%u\n", parent_index);
@@ -6287,8 +6286,7 @@ qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 			parent_type = ISCSI_DISC_PARENT_ISNS;
 		else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
 			parent_type = ISCSI_DISC_PARENT_UNKNOWN;
-		else if (fnode_sess->discovery_parent_type >= 0  &&
-			 fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
+		else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
 			parent_type = ISCSI_DISC_PARENT_SENDTGT;
 		else
 			parent_type = ISCSI_DISC_PARENT_UNKNOWN;
@@ -6590,7 +6588,7 @@ static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
 	struct dev_db_entry *fw_ddb_entry = NULL;
 	dma_addr_t fw_ddb_entry_dma;
 	uint16_t *ddb_cookie = NULL;
-	size_t ddb_size;
+	size_t ddb_size = 0;
 	void *pddb = NULL;
 	int target_id;
 	int rc = 0;