arch_topology: Fix putting invalid cpu clk

Add a sanity check before putting the cpu clk.

Fixes: b8fe128dad8f (“arch_topology: Adjust initial CPU capacities with current freq")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Link: https://lore.kernel.org/r/20200317063308.23209-1-jeffy.chen@rock-chips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 4cb1616d3871516129db4c6880e8907e6206d40a..e5d691cf824ceaada69942543443fcabf65b8025 100644 (file)
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -164,11 +164,11 @@ bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
                 * frequency (by keeping the initial freq_factor value).
                 */
                cpu_clk = of_clk_get(cpu_node, 0);
-               if (!PTR_ERR_OR_ZERO(cpu_clk))
+               if (!PTR_ERR_OR_ZERO(cpu_clk)) {
                        per_cpu(freq_factor, cpu) =
                                clk_get_rate(cpu_clk) / 1000;
-
-               clk_put(cpu_clk);
+                       clk_put(cpu_clk);
+               }
        } else {
                if (raw_capacity) {
                        pr_err("cpu_capacity: missing %pOF raw capacity\n",