modpost: Fix resource leak in read_dump()

Function read_dump() memory maps the input via grab_file(), but fails to call
the corresponding unmap function. Add the missing call to release_file().
Detected by Coverity: CID 1192419

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 2 insertions, 0 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 066355673930..ea3e2bdf1825 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2113,8 +2113,10 @@ static void read_dump(const char *fname, unsigned int kernel)
                 s->preloaded = 1;
                 sym_update_crc(symname, mod, crc, export_no(export));
         }
+        release_file(file, size);
         return;
 fail:
+        release_file(file, size);
         fatal("parse error in symbol dump file\n");
 }