staging: rtl8723bs: remove return from a function returning void

Adhere to Linux kernel coding style.

Reported by checkpatch:

WARNING: void function return statements are not generally useful
Signed-off-by: NSevinj Aghayeva <sevinj.aghayeva@gmail.com>
Link: https://lore.kernel.org/r/d1aa09f34cd192e284048999ba8e20d26a224483.1649128267.git.sevinj.aghayeva@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_mlme_ext.c

@@ -5114,22 +5114,17 @@ void survey_timer_hdl(struct timer_list *t)
 
 		ph2c = rtw_zmalloc(sizeof(struct cmd_obj));
 		if (!ph2c)
-			goto exit_survey_timer_hdl;
+			return;
 
 		psurveyPara = rtw_zmalloc(sizeof(struct sitesurvey_parm));
 		if (!psurveyPara) {
 			kfree(ph2c);
-			goto exit_survey_timer_hdl;
+			return;
 		}
 
 		init_h2fwcmd_w_parm_no_rsp(ph2c, psurveyPara, GEN_CMD_CODE(_SiteSurvey));
 		rtw_enqueue_cmd(pcmdpriv, ph2c);
 	}
-
-
-exit_survey_timer_hdl:
-
-	return;
 }
 
 void link_timer_hdl(struct timer_list *t)