mfd: rsmu_spi: Remove unneeded casts of void *

There is no need to cast a "void *" to a different type of pointer.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/ae84c1751e79cb49ab584557f4ecd835a8493d7c.1678704562.git.geert+renesas@glider.be

drivers/mfd/rsmu_spi.c

@@ -129,7 +129,7 @@ static int rsmu_write_page_register(struct rsmu_ddata *rsmu, u16 reg)
 
 static int rsmu_reg_read(void *context, unsigned int reg, unsigned int *val)
 {
-	struct rsmu_ddata *rsmu = spi_get_drvdata((struct spi_device *)context);
+	struct rsmu_ddata *rsmu = spi_get_drvdata(context);
 	u8 addr = (u8)(reg & RSMU_LOWER_ADDR_MASK);
 	int err;
 
@@ -146,7 +146,7 @@ static int rsmu_reg_read(void *context, unsigned int reg, unsigned int *val)
 
 static int rsmu_reg_write(void *context, unsigned int reg, unsigned int val)
 {
-	struct rsmu_ddata *rsmu = spi_get_drvdata((struct spi_device *)context);
+	struct rsmu_ddata *rsmu = spi_get_drvdata(context);
 	u8 addr = (u8)(reg & RSMU_LOWER_ADDR_MASK);
 	u8 data = (u8)val;
 	int err;