[PATCH] vfio/iommufd: Fix memory leak

["Cédric Le Goater" <clg@redhat.com>]

Make sure variable contents is freed if scanf fails.

Cc: Eric Auger <eric.auger@redhat.com>
Cc: Yi Liu <yi.l.liu@intel.com>
Cc: Zhenzhong Duan <zhenzhong.duan@intel.com>
Fixes: CID 1540007
Fixes: 5ee3dc7af785 ("vfio/iommufd: Implement the iommufd backend")
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 hw/vfio/iommufd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index a75a785e90c64cdcc4d10c88d217801b3f536cdb..cd549e0ee8573e75772c51cc96153762a6bc8550 100644
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -152,9 +152,8 @@ static int iommufd_cdev_getfd(const char *sysfs_path, Error **errp)
 
     if (sscanf(contents, "%d:%d", &major, &minor) != 2) {
         error_setg(errp, "failed to get major:minor for \"%s\"", vfio_dev_path);
-        goto out_free_dev_path;
+        goto out_free_contents;
     }
-    g_free(contents);
     vfio_devt = makedev(major, minor);
 
     vfio_path = g_strdup_printf("/dev/vfio/devices/%s", dent->d_name);
@@ -166,6 +165,8 @@ static int iommufd_cdev_getfd(const char *sysfs_path, Error **errp)
     trace_iommufd_cdev_getfd(vfio_path, ret);
     g_free(vfio_path);
 
+out_free_contents:
+    g_free(contents);
 out_free_dev_path:
     g_free(vfio_dev_path);
 out_close_dir:
-- 
2.44.0