net: wwan: iosm: fix memory leak in ipc_mux_init()

When failed to alloc ipc_mux->ul_adb.pp_qlt in ipc_mux_init(), ipc_mux
is not released.

Fixes: 1f52d7b6 ("net: wwan: iosm: Enable M.2 7360 WWAN card support")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com>
Link: https://lore.kernel.org/r/20221203020903.383235-1-shaozhengchao@huawei.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/wwan/iosm/iosm_ipc_mux.c

@@ -332,6 +332,7 @@ struct iosm_mux *ipc_mux_init(struct ipc_mux_config *mux_cfg,
 			if (!ipc_mux->ul_adb.pp_qlt[i]) {
 				for (j = i - 1; j >= 0; j--)
 					kfree(ipc_mux->ul_adb.pp_qlt[j]);
+				kfree(ipc_mux);
 				return NULL;
 			}
 		}