remoteproc: st: correct probe error management

Associated clock is prepared in st_rproc_parse_dt function.
it should be unprepared in case of error during probing.
Signed-off-by: NLoic Pallardy <loic.pallardy@st.com>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/st_remoteproc.c

@@ -247,7 +247,7 @@ static int st_rproc_probe(struct platform_device *pdev)
 	enabled = st_rproc_state(pdev);
 	if (enabled < 0) {
 		ret = enabled;
-		goto free_rproc;
+		goto free_clk;
 	}
 
 	if (enabled) {
@@ -259,10 +259,12 @@ static int st_rproc_probe(struct platform_device *pdev)
 
 	ret = rproc_add(rproc);
 	if (ret)
-		goto free_rproc;
+		goto free_clk;
 
 	return 0;
 
+free_clk:
+	clk_unprepare(ddata->clk);
 free_rproc:
 	rproc_free(rproc);
 	return ret;