staging: rtl8723bs: hal: sdio_halinit: Remove unused variable 'ret'

Fixes the following W=1 kernel build warning(s):

 drivers/staging/rtl8723bs/hal/sdio_halinit.c: In function ‘CardDisableRTL8723BSdio’:
 drivers/staging/rtl8723bs/hal/sdio_halinit.c:881:5: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
 drivers/staging/rtl8723bs/hal/sdio_halinit.c: In function ‘CardDisableRTL8723BSdio’:
 drivers/staging/rtl8723bs/hal/sdio_halinit.c:881:5: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
 drivers/staging/rtl8723bs/hal/sdio_halinit.c: In function ‘CardDisableRTL8723BSdio’:
 drivers/staging/rtl8723bs/hal/sdio_halinit.c:881:5: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
 drivers/staging/rtl8723bs/hal/sdio_halinit.c: In function ‘CardDisableRTL8723BSdio’:
 drivers/staging/rtl8723bs/hal/sdio_halinit.c:881:5: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
 drivers/staging/rtl8723bs/hal/sdio_halinit.c: In function ‘CardDisableRTL8723BSdio’:
 drivers/staging/rtl8723bs/hal/sdio_halinit.c:881:5: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Fabio Aiuto <fabioaiuto83@gmail.com>
Cc: Stanley@BB.SD3
Cc: linux-staging@lists.linux.dev
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210414181129.1628598-58-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/sdio_halinit.c

@@ -878,10 +878,9 @@ static void CardDisableRTL8723BSdio(struct adapter *padapter)
 {
 	u8 u1bTmp;
 	u8 bMacPwrCtrlOn;
-	u8 ret = _FAIL;
 
 	/*  Run LPS WL RFOFF flow */
-	ret = HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_enter_lps_flow);
+	HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_enter_lps_flow);
 
 	/* 	==== Reset digital sequence   ====== */
 
@@ -909,9 +908,8 @@ static void CardDisableRTL8723BSdio(struct adapter *padapter)
 	/* 	==== Reset digital sequence end ====== */
 
 	bMacPwrCtrlOn = false;	/*  Disable CMD53 R/W */
-	ret = false;
 	rtw_hal_set_hwreg(padapter, HW_VAR_APFM_ON_MAC, &bMacPwrCtrlOn);
-	ret = HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_card_disable_flow);
+	HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_card_disable_flow);
 }
 
 static u32 rtl8723bs_hal_deinit(struct adapter *padapter)