media: sti/hva: add missing clk_disable_unprepare()

Fixes this smatch warning:

drivers/media/platform/sti/hva/hva-hw.c:453 hva_hw_runtime_resume() warn: 'hva->clk' not released on lines: 450.

Call clk_disable_unprepare() when clk_set_rate() fails.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Jean-Christophe Trotin <jean-christophe.trotin@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/sti/hva/hva-hw.c

@@ -447,6 +447,7 @@ int hva_hw_runtime_resume(struct device *dev)
 	if (clk_set_rate(hva->clk, CLK_RATE)) {
 		dev_err(dev, "%s     failed to set clock frequency\n",
 			HVA_PREFIX);
+		clk_disable_unprepare(hva->clk);
 		return -EINVAL;
 	}