ASoC: wm_adsp: fix error return code in wm_adsp_load()

Fix to return a negative error code from the error handling case
instead of 0 in function wm_adsp_load(), as done elsewhere in this
function.

Fixes: 170b1e12 ("ASoC: wm_adsp: Add support for new Halo core DSPs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Luo Meng <luomeng12@huawei.com>
Acked-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20201123133839.4073787-1-luomeng12@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm_adsp.c

@@ -1937,6 +1937,7 @@ static int wm_adsp_load(struct wm_adsp *dsp)
 			mem = wm_adsp_find_region(dsp, type);
 			if (!mem) {
 				adsp_err(dsp, "No region of type: %x\n", type);
+				ret = -EINVAL;
 				goto out_fw;
 			}