aco: fix copy+paste error in split_buffer_store

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5207>
diff --git a/src/amd/compiler/aco_instruction_selection.cpp b/src/amd/compiler/aco_instruction_selection.cpp
index f879a81..94a076f 100644
--- a/src/amd/compiler/aco_instruction_selection.cpp
+++ b/src/amd/compiler/aco_instruction_selection.cpp
@@ -3857,7 +3857,7 @@
 
       /* dword or larger stores have to be dword-aligned */
       unsigned align_mul = instr ? nir_intrinsic_align_mul(instr) : 4;
-      unsigned align_offset = instr ? nir_intrinsic_align_mul(instr) : 0;
+      unsigned align_offset = instr ? nir_intrinsic_align_offset(instr) : 0;
       bool dword_aligned = (align_offset + offset) % 4 == 0 && align_mul % 4 == 0;
       if (bytes >= 4 && !dword_aligned)
          bytes = MIN2(bytes, 2);