arm64: Remove the __user annotation for the restore_za_context() argument

The struct user_ctx *user pointer passed to restore_za_context() is not
a user point but a structure containing several __user pointers. Remove
the __user annotation.

Signed-off-by: Catalin Marinas <[email protected]>
Fixes: 3978221 ("arm64/sme: Implement ZA signal handling")
Reported-by: kernel test robot <[email protected]>
Cc: Mark Brown <[email protected]>
Reviewed-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

Author: ctmarinas

arch/arm64/kernel/signal.c

@@ -385,7 +385,7 @@ static int preserve_za_context(struct za_context __user *ctx)
 	return err ? -EFAULT : 0;
 }
 
-static int restore_za_context(struct user_ctxs __user *user)
+static int restore_za_context(struct user_ctxs *user)
 {
 	int err;
 	unsigned int vq;