iscsi-target: fix invalid flags in text response

In case of multiple text responses iscsi-target
sets both 'F' and 'C' bit for the final text response
pdu, this issue happens because hdr->flags is not
zeroed out before ORing with 'F' bit.

This patch removes the | operator to fix this issue.
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/iscsi/iscsi_target.c

@@ -3488,9 +3488,9 @@ iscsit_build_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn,
 		return text_length;
 
 	if (completed) {
-		hdr->flags |= ISCSI_FLAG_CMD_FINAL;
+		hdr->flags = ISCSI_FLAG_CMD_FINAL;
 	} else {
-		hdr->flags |= ISCSI_FLAG_TEXT_CONTINUE;
+		hdr->flags = ISCSI_FLAG_TEXT_CONTINUE;
 		cmd->read_data_done += text_length;
 		if (cmd->targ_xfer_tag == 0xFFFFFFFF)
 			cmd->targ_xfer_tag = session_get_next_ttt(conn->sess);