[PATCH] memory: brcmstb_dpfe: Fix memory leak

[Alex Dewar]

In brcmstb_dpfe_download_firmware(), memory is allocated to variable fw by
firmware_request_nowarn(), but never released. Fix up to release fw on
all return paths.

Signed-off-by: Alex Dewar <alex.dewa...@gmail.com>
---
 drivers/memory/brcmstb_dpfe.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/memory/brcmstb_dpfe.c b/drivers/memory/brcmstb_dpfe.c
index 60e8633b1175..f24a9dc65f3c 100644
--- a/drivers/memory/brcmstb_dpfe.c
+++ b/drivers/memory/brcmstb_dpfe.c
@@ -616,7 +616,7 @@ static int brcmstb_dpfe_download_firmware(struct 
brcmstb_dpfe_priv *priv)
        const u32 *dmem, *imem;
        struct init_data init;
        const void *fw_blob;
-       int ret;
+       int ret = 0;
 
        /*
         * Skip downloading the firmware if the DCPU is already running and
@@ -647,8 +647,10 @@ static int brcmstb_dpfe_download_firmware(struct 
brcmstb_dpfe_priv *priv)
                return (ret == -ENOENT) ? -EPROBE_DEFER : ret;
 
        ret = __verify_firmware(&init, fw);
-       if (ret)
-               return -EFAULT;
+       if (ret) {
+               ret = -EFAULT;
+               goto release_fw;
+       }
 
        __disable_dcpu(priv);
 
@@ -667,18 +669,20 @@ static int brcmstb_dpfe_download_firmware(struct 
brcmstb_dpfe_priv *priv)
 
        ret = __write_firmware(priv->dmem, dmem, dmem_size, is_big_endian);
        if (ret)
-               return ret;
+               goto release_fw;
        ret = __write_firmware(priv->imem, imem, imem_size, is_big_endian);
        if (ret)
-               return ret;
+               goto release_fw;
 
        ret = __verify_fw_checksum(&init, priv, header, init.chksum);
        if (ret)
-               return ret;
+               goto release_fw;
 
        __enable_dcpu(priv);
 
-       return 0;
+release_fw:
+       release_firmware(fw);
+       return ret;
 }
 
 static ssize_t generic_show(unsigned int command, u32 response[],
-- 
2.28.0