net: dsa: bcm_sf2: fix missing clk_disable_unprepare() in error paths

Smatch reports:
drivers/net/dsa/bcm_sf2.c:997 bcm_sf2_sw_resume() warn:
'priv->clk' from clk_prepare_enable() not released on lines: 983,990.

The clock enabled by clk_prepare_enable() in bcm_sf2_sw_resume()
is not released if bcm_sf2_sw_rst() or bcm_sf2_cfp_resume() fails.

Add the missing clk_disable_unprepare() calls in the error paths
to properly release the clock resource.

Fixes: e9ec5c3 ("net: dsa: bcm_sf2: request and handle clocks")
Reviewed-by: Jonas Gorski <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Signed-off-by: Anas Iqbal <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: iqbalcodes6602

drivers/net/dsa/bcm_sf2.c

@@ -980,15 +980,19 @@ static int bcm_sf2_sw_resume(struct dsa_switch *ds)
 	ret = bcm_sf2_sw_rst(priv);
 	if (ret) {
 		pr_err("%s: failed to software reset switch\n", __func__);
+		if (!priv->wol_ports_mask)
+			clk_disable_unprepare(priv->clk);
 		return ret;
 	}
 
 	bcm_sf2_crossbar_setup(priv);
 
 	ret = bcm_sf2_cfp_resume(ds);
-	if (ret)
+	if (ret) {
+		if (!priv->wol_ports_mask)
+			clk_disable_unprepare(priv->clk);
 		return ret;
-
+	}
 	if (priv->hw_params.num_gphy == 1)
 		bcm_sf2_gphy_enable_set(ds, true);