staging: r8822be: fix memory leak of eeprom_map on error exit return

A memory leak of eeprom_map occurs if the call to halmac_eeprom_parser_88xx
fails. Fix this by kfree'ing it before returning.

Detected by CoverityScan, CID#1454569 ("Resource leak")
Fixes: 938a0447 ("staging: r8822be: Add code for halmac sub-driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtlwifi/halmac/halmac_88xx/halmac_api_88xx.c

@@ -1950,8 +1950,10 @@ halmac_dump_logical_efuse_map_88xx(struct halmac_adapter *halmac_adapter,
 
 		if (halmac_eeprom_parser_88xx(halmac_adapter,
 					      halmac_adapter->hal_efuse_map,
-					      eeprom_map) != HALMAC_RET_SUCCESS)
+					      eeprom_map) != HALMAC_RET_SUCCESS) {
+			kfree(eeprom_map);
 			return HALMAC_RET_EEPROM_PARSING_FAIL;
+		}
 
 		PLATFORM_EVENT_INDICATION(
 			driver_adapter, HALMAC_FEATURE_DUMP_LOGICAL_EFUSE,