[PATCH 4.19 37/54] staging: rtl8723bs: Fix a resource leak in sd_int_dpc

[Greg Kroah-Hartman]

From: Xiangyang Zhang <xyz.sun.ok@xxxxxxxxx>

commit 990e4ad3ddcb72216caeddd6e62c5f45a21e8121 upstream.

The "c2h_evt" variable is not freed when function call
"c2h_evt_read_88xx" failed

Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Xiangyang Zhang <xyz.sun.ok@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210628152239.5475-1-xyz.sun.ok@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/staging/rtl8723bs/hal/sdio_ops.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/staging/rtl8723bs/hal/sdio_ops.c
+++ b/drivers/staging/rtl8723bs/hal/sdio_ops.c
@@ -1077,6 +1077,8 @@ void sd_int_dpc(struct adapter *adapter)
 				} else {
 					rtw_c2h_wk_cmd(adapter, (u8 *)c2h_evt);
 				}
+			} else {
+				kfree(c2h_evt);
 			}
 		} else {
 			/* Error handling for malloc fail */