RAS/AMD/ATL: Fix MI300 bank hash

Apply the SID bits to the correct offset in the Bank value. Do this in
the temporary value so they don't need to be masked off later.

Fixes: 87a61237

 ("RAS/AMD/ATL: Add MI300 DRAM to normalized address translation support")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/20240607-mi300-dram-xl-fix-v1-1-2f11547a178c@amd.com