of: reserved_mem: add missing of_node_put() for proper ref-counting

Commit d698a388146c ("of: reserved-memory: ignore disabled memory-region
nodes") added an early return in of_reserved_mem_device_init_by_idx(), but
didn't call of_node_put() on a device_node whose ref-count was incremented
in the call to of_parse_phandle() preceding the early exit.

Fixes: d698a388146c ("of: reserved-memory: ignore disabled memory-region nodes")
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>
Cc: stable@vger.kernel.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 7989703b883ce64ebe9fa8f58a7c718b6dd10db1..6bd610ee2cd734bf91d61a35c7ddb12df4cec0ba 100644 (file)
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -324,8 +324,10 @@ int of_reserved_mem_device_init_by_idx(struct device *dev,
        if (!target)
                return -ENODEV;
 
-       if (!of_device_is_available(target))
+       if (!of_device_is_available(target)) {
+               of_node_put(target);
                return 0;
+       }
 
        rmem = __find_rmem(target);
        of_node_put(target);