staging: media: atomisp: Compress return logic into one line.

Simplify function return by merging assignment and return into a single
line. The following coccinelle script is used to fix this issue.

@@
expression e;
local idexpression ret;
@@

-ret = e;
-return ret;
+return e;

This patch also removes unnecessary declarations.
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/i2c/gc2235.c

@@ -541,10 +541,7 @@ static int __gc2235_init(struct v4l2_subdev *sd)
 static int is_init;
 static int gc2235_init(struct v4l2_subdev *sd)
 {
-	int ret = 0;
-	ret = __gc2235_init(sd);
-
-	return ret;
+	return __gc2235_init(sd);
 }
 
 static int power_ctrl(struct v4l2_subdev *sd, bool flag)
@@ -585,9 +582,7 @@ static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
 
 	ret |= dev->platform_data->gpio1_ctrl(sd, !flag);
 	usleep_range(60, 90);
-	ret = dev->platform_data->gpio0_ctrl(sd, flag);
-
-	return ret;
+	return dev->platform_data->gpio0_ctrl(sd, flag);
 }
 
 static int power_up(struct v4l2_subdev *sd)

drivers/staging/media/atomisp/i2c/ov8858.c

@@ -2206,9 +2206,7 @@ static struct i2c_driver ov8858_driver = {
 
 static __init int ov8858_init_mod(void)
 {
-	int ret;
-	ret = i2c_add_driver(&ov8858_driver);
-	return ret;
+	return i2c_add_driver(&ov8858_driver);
 }
 
 static __exit void ov8858_exit_mod(void)