I2C: ali15x3: Do PCI error checks on own line

Instead of if conditions with line splits, use the usual error handling
pattern with a separate variable to improve readability.

No functional changes intended.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Author: ij-intel

drivers/i2c/busses/i2c-ali15x3.c

@@ -165,14 +165,15 @@ static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
 	}
 
 	if(force_addr) {
+		int ret;
+
 		dev_info(&ALI15X3_dev->dev, "forcing ISA address 0x%04X\n",
 			ali15x3_smba);
-		if (PCIBIOS_SUCCESSFUL != pci_write_config_word(ALI15X3_dev,
-								SMBBA,
-								ali15x3_smba))
+		ret = pci_write_config_word(ALI15X3_dev, SMBBA, ali15x3_smba);
+		if (ret != PCIBIOS_SUCCESSFUL)
 			goto error;
-		if (PCIBIOS_SUCCESSFUL != pci_read_config_word(ALI15X3_dev,
-								SMBBA, &a))
+		ret = pci_read_config_word(ALI15X3_dev, SMBBA, &a);
+		if (ret != PCIBIOS_SUCCESSFUL)
 			goto error;
 		if ((a & ~(ALI15X3_SMB_IOSIZE - 1)) != ali15x3_smba) {
 			/* make sure it works */