staging: r8188eu: convert GetHalDefVar8188EUsb() to void

The return value of GetHalDefVar8188EUsb() is not used. Convert the
function to void.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220128115445.6606-5-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1600,10 +1600,9 @@ void GetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 }
 
 /* Query setting of specified variable. */
-u8 GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable, void *pValue)
+void GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable, void *pValue)
 {
 	struct hal_data_8188e *haldata = &Adapter->haldata;
-	u8 bResult = _SUCCESS;
 
 	switch (eVariable) {
 	case HAL_DEF_UNDERCORATEDSMOOTHEDPWDB:
@@ -1647,11 +1646,8 @@ u8 GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable
 		*((u8 *)pValue) = haldata->bDumpTxPkt;
 		break;
 	default:
-		bResult = _FAIL;
 		break;
 	}
-
-	return bResult;
 }
 
 /* Change default setting of specified variable. */

drivers/staging/r8188eu/include/hal_intf.h

@@ -102,7 +102,7 @@ int rtl8188e_IOL_exec_cmds_sync(struct adapter *adapter,
 				struct xmit_frame *xmit_frame, u32 max_wating_ms, u32 bndy_cnt);
 
 u8 SetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable, void *pValue);
-u8 GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable, void *pValue);
+void GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable, void *pValue);
 
 unsigned int rtl8188eu_inirp_init(struct adapter *Adapter);