media: platform/sh_veu.c: remove redundant NULL pointer checks

Function `sh_veu_find_fmt` returns an address that is an addition of a
base pointer `sh_veu_fmt` and an offset. The base pointer refers to a
global variable of which address cannot be NULL. Therefore, this commit
removes the NULL pointer checks on the return values of function
`sh_veu_find_fmt`.

Signed-off-by: Shaobo He <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/sh_veu.c

···
 	const struct sh_veu_format *fmt;
 
 	fmt = sh_veu_find_fmt(f);
-	if (!fmt)
-		/* wrong buffer type */
-		return -EINVAL;
 
 	return sh_veu_try_fmt(f, fmt);
 }
···
 	const struct sh_veu_format *fmt;
 
 	fmt = sh_veu_find_fmt(f);
-	if (!fmt)
-		/* wrong buffer type */
-		return -EINVAL;
 
 	return sh_veu_try_fmt(f, fmt);
 }