kernel/resource.c: remove the unneeded assignment in function __find_resource

This line was introduced by fcb11918 ("resources: add arch hook for
preventing allocation in reserved areas").  But the struct tmp was already
assigned to *new in the above line, so this seems superfluous.  Just
remove it.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>