qcacld-3.0: Sanity check for session_id in roam

For session_id is not have sanity check, an OOB would happen
leads to crash.

Added Sanity checks for session_id in roam functions and
return failure if session_id is equals to NULL or MAX value.

Change-Id: I033c6567f53ead2a721882e9b44f3d0bcb58084d
CRs-Fixed: 3149880

core/sme/src/csr/csr_util.c

@@ -1185,6 +1185,11 @@ QDF_STATUS csr_set_modify_profile_fields(struct mac_context *mac,
 {
 	struct csr_roam_session *pSession = CSR_GET_SESSION(mac, sessionId);
 
+	if (!pSession) {
+		sme_err("Session_id invalid %d", sessionId);
+		return QDF_STATUS_E_INVAL;
+	}
+
 	qdf_mem_copy(&pSession->modifyProfileFields,
 		     pModifyProfileFields, sizeof(tCsrRoamModifyProfileFields));