bus: fsl-mc: fix error return code in fsl_mc_object_allocate()

[ Upstream commit 3d70fb03711c37bc64e8e9aea5830f498835f6bf ]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 197f4d6a4a00 ("staging: fsl-mc: fsl-mc object allocator driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1607068967-31991-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c
index e906ecfe23dd82025cdfc9b412f309a7f04fdfdf..9cb0733a039911d4945bd323b783fe315699f430 100644 (file)
--- a/drivers/bus/fsl-mc/fsl-mc-allocator.c
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
@@ -292,8 +292,10 @@ int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
                goto error;
 
        mc_adev = resource->data;
-       if (!mc_adev)
+       if (!mc_adev) {
+               error = -EINVAL;
                goto error;
+       }
 
        *new_mc_adev = mc_adev;
        return 0;