If edac_mc_alloc() fails, also unmap the window. Add a goto to do so.

Found by code review and compiled on ubuntu 20.04.

Fixes: df8bc08c192f ("edac x38: new MC driver module") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li lihaoxiang@isrc.iscas.ac.cn --- drivers/edac/x38_edac.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/edac/x38_edac.c b/drivers/edac/x38_edac.c index 49ab5721aab2..09889b615584 100644 --- a/drivers/edac/x38_edac.c +++ b/drivers/edac/x38_edac.c @@ -342,8 +342,10 @@ static int x38_probe1(struct pci_dev *pdev, int dev_idx) layers[1].size = x38_channel_num; layers[1].is_virt_csrow = false; mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, 0); - if (!mci) - return -ENOMEM; + if (!mci) { + rc = -ENOMEM; + goto fail; + }

edac_dbg(3, "MC: init mci\n");