proc: proc_init_inodecache() can't fail

kmem_cache creation code will panic, don't return anything.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index c6b4fa7..2543fd0 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -106,14 +106,13 @@
 	inode_init_once(&ei->vfs_inode);
 }
 
-int __init proc_init_inodecache(void)
+void __init proc_init_inodecache(void)
 {
 	proc_inode_cachep = kmem_cache_create("proc_inode_cache",
 					     sizeof(struct proc_inode),
 					     0, (SLAB_RECLAIM_ACCOUNT|
 						SLAB_MEM_SPREAD|SLAB_PANIC),
 					     init_once);
-	return 0;
 }
 
 static const struct super_operations proc_sops = {