interconnect: core: fix error return code of icc_link_destroy()

When krealloc() fails and new is NULL, no error return code of
icc_link_destroy() is assigned.
To fix this bug, ret is assigned with -ENOMEM hen new is NULL.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20210306132857.17020-1-baijiaju1990@gmail.com
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index 5ad519c9f2396cea0d25b0dd30ef0d6de24b5555..8a1e70e008764b09b27e43ee66b69ae045086b7b 100644 (file)
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -942,6 +942,8 @@ int icc_link_destroy(struct icc_node *src, struct icc_node *dst)
                       GFP_KERNEL);
        if (new)
                src->links = new;
+       else
+               ret = -ENOMEM;
 
 out:
        mutex_unlock(&icc_lock);