staging: r8712u: Fix memory leak in firmware loading

The error path leaks the firmware struct.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/rtl8712/hal_init.c b/drivers/staging/rtl8712/hal_init.c
index 32088a6..84be383 100644 (file)
--- a/drivers/staging/rtl8712/hal_init.c
+++ b/drivers/staging/rtl8712/hal_init.c
@@ -128,12 +128,13 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
        u8 *ptmpchar = NULL, *ppayload, *ptr;
        struct tx_desc *ptx_desc;
        u32 txdscp_sz = sizeof(struct tx_desc);
+       u8 ret = _FAIL;
 
        ulfilelength = rtl871x_open_fw(padapter, &phfwfile_hdl, &pmappedfw);
        if (pmappedfw && (ulfilelength > 0)) {
                update_fwhdr(&fwhdr, pmappedfw);
                if (chk_fwhdr(&fwhdr, ulfilelength) == _FAIL)
-                       goto exit_fail;
+                       goto firmware_rel;
                fill_fwpriv(padapter, &fwhdr.fwpriv);
                /* firmware check ok */
                maxlen = (fwhdr.img_IMEM_size > fwhdr.img_SRAM_size) ?
@@ -141,7 +142,7 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
                maxlen += txdscp_sz;
                ptmpchar = _malloc(maxlen + FWBUFF_ALIGN_SZ);
                if (ptmpchar == NULL)
-                       return _FAIL;
+                       goto firmware_rel;
 
                ptx_desc = (struct tx_desc *)(ptmpchar + FWBUFF_ALIGN_SZ -
                            ((addr_t)(ptmpchar) & (FWBUFF_ALIGN_SZ - 1)));
@@ -273,11 +274,13 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
                        goto exit_fail;
        } else
                goto exit_fail;
-       return _SUCCESS;
+       ret = _SUCCESS;
 
 exit_fail:
        kfree(ptmpchar);
-       return _FAIL;
+firmware_rel:
+       release_firmware((struct firmware *)phfwfile_hdl);
+       return ret;
 }
 
 uint rtl8712_hal_init(struct _adapter *padapter)