soc: sunxi: sram: Return void from the release function

There is no point in returning an error here, as the caller can do
nothing about it. In fact, all callers already ignore the return value.

Acked-by: Jernej Skrabec <[e-mail]>
Signed-off-by: Samuel Holland <[e-mail]>
Reviewed-by: Heiko Stuebner <[e-mail]>
Tested-by: Heiko Stuebner <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jernej Skrabec <[e-mail]>

drivers/soc/sunxi/sunxi_sram.c

···
 }
 EXPORT_SYMBOL(sunxi_sram_claim);
 
-int sunxi_sram_release(struct device *dev)
+void sunxi_sram_release(struct device *dev)
 {
 	const struct sunxi_sram_data *sram_data;
 	struct sunxi_sram_desc *sram_desc;
 
 	if (!dev || !dev->of_node)
-		return -EINVAL;
+		return;
 
 	sram_data = sunxi_sram_of_parse(dev->of_node, NULL);
 	if (IS_ERR(sram_data))
-		return -EINVAL;
+		return;
 
 	sram_desc = to_sram_desc(sram_data);
 
 	spin_lock(&sram_lock);
 	sram_desc->claimed = false;
 	spin_unlock(&sram_lock);
-
-	return 0;
 }
 EXPORT_SYMBOL(sunxi_sram_release);
 

include/linux/soc/sunxi/sunxi_sram.h

···
 #define _SUNXI_SRAM_H_
 
 int sunxi_sram_claim(struct device *dev);
-int sunxi_sram_release(struct device *dev);
+void sunxi_sram_release(struct device *dev);
 
 #endif /* _SUNXI_SRAM_H_ */