qcacmn: Add break for few cases in tdls_process_mgmt_req

Currently break statement is missing for some cases in
tdls_process_mgmt_req.
Add break statement as fallthrough is not required for
these cases.

Change-Id: I9ef290cdea8980f1b550cfebfb80ee81c5a694c0
CRs-Fixed: 2233184

umac/tdls/core/src/wlan_tdls_mgmt.c

@@ -417,6 +417,7 @@ QDF_STATUS tdls_process_mgmt_req(
 	case WLAN_SER_CMD_DENIED_UNSPECIFIED:
 		/* free the request */
 		qdf_mem_free(tdls_mgmt_req);
+		break;
 
 	default:
 		QDF_ASSERT(0);